From 6f1797fb59c23ad4f545ca5ef458ff56199d8152 Mon Sep 17 00:00:00 2001
From: xnoguer <xnoguer@sigge-xnoguer.sigge.cl>
Date: Sun, 23 Apr 2023 17:38:21 -0400
Subject: [PATCH 1/7] Using grep -E

---
 include/binaries                |  2 --
 include/functions               |  9 +++++++--
 include/tests_authentication    | 32 ++++++++++++++++----------------
 include/tests_boot_services     | 14 +++++++-------
 include/tests_containers        |  2 +-
 include/tests_crypto            |  4 ++--
 include/tests_databases         |  4 ++--
 include/tests_file_integrity    |  8 ++++----
 include/tests_file_permissions  |  2 +-
 include/tests_filesystems       | 14 +++++++-------
 include/tests_firewalls         |  6 +++---
 include/tests_homedirs          |  4 ++--
 include/tests_insecure_services |  2 +-
 include/tests_kernel            | 18 +++++++++---------
 include/tests_logging           | 24 ++++++++++++------------
 include/tests_mail_messaging    | 10 +++++-----
 include/tests_nameservices      |  8 ++++----
 include/tests_networking        |  2 +-
 include/tests_php               | 18 +++++++++---------
 include/tests_ports_packages    |  8 ++++----
 include/tests_printers_spoolers |  6 +++---
 include/tests_scheduling        | 16 ++++++++--------
 include/tests_shells            |  2 +-
 include/tests_squid             |  2 +-
 include/tests_ssh               |  4 ++--
 include/tests_storage           |  8 ++++----
 include/tests_time              | 18 +++++++++---------
 include/tests_tooling           |  4 ++--
 include/tests_usb               | 12 ++++++------
 include/tests_webservers        |  6 +++---
 30 files changed, 136 insertions(+), 133 deletions(-)

diff --git a/include/binaries b/include/binaries
index 7aabba42..c8fdc1e2 100644
--- a/include/binaries
+++ b/include/binaries
@@ -169,7 +169,6 @@
                             domainname)             DOMAINNAMEBINARY="${BINARY}";      LogText "  Found known binary: domainname (NIS domain) - ${BINARY}" ;;
                             dpkg)                   DPKGBINARY="${BINARY}";            LogText "  Found known binary: dpkg (package management) - ${BINARY}" ;;
                             xbps-query)             XBPSBINARY="${BINARY}";            LogText "  Found known binary: xbps (package management) - ${BINARY}" ;;
-                            egrep)                  EGREPBINARY=${BINARY};             LogText "  Found known binary: egrep (text search) - ${BINARY}" ;;
                             equery)                 EQUERYBINARY="${BINARY}";          LogText "  Found known binary: query (package manager) - ${BINARY}" ;;
                             evmctl)                 EVMCTLBINARY=${BINARY};            LogText "  Found known binary: evmctl (IMA/EVM tool) - ${BINARY}" ;;
                             exim)                   EXIMBINARY="${BINARY}";            EXIMVERSION=$(${BINARY} -bV | grep 'Exim version' | awk '{ print $3 }' | xargs); LogText "  Found known binary ${BINARY} (version ${EXIMVERSION})" ;;
@@ -341,7 +340,6 @@
         [ "${AWKBINARY:-}" ] || ExitFatal "awk binary not found"
         [ "${CAT_BINARY:-}" ] || ExitFatal "cat binary not found"
         [ "${CUTBINARY:-}" ] || ExitFatal "cut binary not found"
-        [ "${EGREPBINARY:-}" ] || ExitFatal "egrep binary not found"
         [ "${FINDBINARY:-}" ] || ExitFatal "find binary not found"
         [ "${GREPBINARY:-}" ] || ExitFatal "grep binary not found"
         [ "${HEADBINARY:-}" ] || ExitFatal "head binary not found"
diff --git a/include/functions b/include/functions
index 38cc46b3..841586be 100644
--- a/include/functions
+++ b/include/functions
@@ -1315,7 +1315,7 @@
             return 2
         else
             for CHECK_PERMISSION in ${CHECKPERMISSION_FULL}; do
-                DATA=$(echo ${CHECK_PERMISSION} | ${EGREPBINARY} "[rwx]")
+                DATA=$(echo ${CHECK_PERMISSION} | ${GREPBINARY} -E "[rwx]")
                 if [ $? -eq 0 ]; then
                     # add a dummy character as first character so it looks like output is a normal file
                     CHECK_PERMISSION=$(echo "-${CHECK_PERMISSION}" | ${AWKBINARY} '{k=0;for(i=0;i<=8;i++)k+=((substr($1,i+2,1)~/[rwx]/)*2^(8-i));if(k)printf("%0o",k)}')
@@ -1608,7 +1608,7 @@
                 # This search is not foolproof
                 LogText "Performing simple ps scan (busybox)"
                 PSOPTIONS=" -o args="
-                FIND=$(${PSBINARY:-ps} ${PSOPTIONS} | ${EGREPBINARY:-egrep} "( |/)${search}" | ${GREPBINARY:-grep} -v "grep")
+                FIND=$(${PSBINARY:-ps} ${PSOPTIONS} | ${GREPBINARY:-grep} -E "( |/)${search}" | ${GREPBINARY:-grep} -v "grep")
             else
                 if [ -n "${users}" ]; then
                     for u in ${users}; do
@@ -3103,6 +3103,11 @@
                     unsafe=1
                     LogText "Security alert: file is not owned by active user, but can write to it"
                 fi
+                # File is not owned by active user, and not readable by him
+                if [ ! -O "${FILE}" -a ! -r "${FILE}" ]; then
+                    unsafe=1
+                    LogText "Security alert: file is not readable by active user"
+                fi
             fi
 
             # Check file permissions
diff --git a/include/tests_authentication b/include/tests_authentication
index 0552d646..3ec54d64 100644
--- a/include/tests_authentication
+++ b/include/tests_authentication
@@ -42,9 +42,9 @@
         LogText "Test: Searching accounts with UID 0"
         # Check if device is a QNAP, as the root user is called admin, and not root
         if [ ${QNAP_DEVICE} -eq 1 ]; then
-            FIND=$(${GREPBINARY} ':0:' ${ROOTDIR}etc/passwd | ${EGREPBINARY} -v '^#|^admin:|^(\+:\*)?:0:0:::' | ${CUTBINARY} -d ":" -f1,3 | ${GREPBINARY} ':0')
+            FIND=$(${GREPBINARY} ':0:' ${ROOTDIR}etc/passwd | ${GREPBINARY} -E -v '^#|^admin:|^(\+:\*)?:0:0:::' | ${CUTBINARY} -d ":" -f1,3 | ${GREPBINARY} ':0')
         else
-            FIND=$(${GREPBINARY} ':0:' ${ROOTDIR}etc/passwd | ${EGREPBINARY} -v '^#|^root:|^(\+:\*)?:0:0:::' | ${CUTBINARY} -d ":" -f1,3 | ${GREPBINARY} ':0')
+            FIND=$(${GREPBINARY} ':0:' ${ROOTDIR}etc/passwd | ${GREPBINARY} -E -v '^#|^root:|^(\+:\*)?:0:0:::' | ${CUTBINARY} -d ":" -f1,3 | ${GREPBINARY} ':0')
         fi
         if [ -n "${FIND}" ]; then
             Display --indent 2 --text "- Administrator accounts" --result "${STATUS_WARNING}" --color RED
@@ -163,7 +163,7 @@
         LogText "Test: Checking login shells"
         if [ -f ${ROOTDIR}etc/master.passwd ]; then
             # Check for all shells, except: (/usr)/sbin/nologin /nonexistent
-            FIND=$(${GREPBINARY} "[a-z]:\*:" ${ROOTDIR}etc/master.passwd | ${EGREPBINARY} -v '^#|/sbin/nologin|/usr/sbin/nologin|/nonexistent' | ${SEDBINARY} 's/ /!space!/g')
+            FIND=$(${GREPBINARY} "[a-z]:\*:" ${ROOTDIR}etc/master.passwd | ${GREPBINARY} -E -v '^#|/sbin/nologin|/usr/sbin/nologin|/nonexistent' | ${SEDBINARY} 's/ /!space!/g')
             if [ -z "${FIND}" ]; then
                 Display --indent 2 --text "- Login shells" --result "${STATUS_OK}" --color GREEN
             else
@@ -499,13 +499,13 @@
     Register --test-no AUTH-9240 --weight L --network NO --category security --description "Query NIS+ authentication support"
     if [ ${SKIPTEST} -eq 0 ]; then
         if [ -f /etc/nsswitch.conf ]; then
-            FIND=$(${EGREPBINARY} "^passwd" /etc/nsswitch.conf | ${EGREPBINARY} "compat|nisplus")
+            FIND=$(${GREPBINARY} -E "^passwd" /etc/nsswitch.conf | ${GREPBINARY} -E "compat|nisplus")
             if [ -z "${FIND}" ]; then
                 LogText "Result: NIS+ authentication not enabled"
                 Display --indent 2 --text "- NIS+ authentication support" --result "${STATUS_NOT_ENABLED}" --color WHITE
             else
-                FIND2=$(${EGREPBINARY} "^passwd_compat" ${ROOTDIR}etc/nsswitch.conf | ${GREPBINARY} "nisplus")
-                FIND3=$(${EGREPBINARY} "^passwd" ${ROOTDIR}etc/nsswitch.conf | ${GREPBINARY} "nisplus")
+                FIND2=$(${GREPBINARY} -E "^passwd_compat" ${ROOTDIR}etc/nsswitch.conf | ${GREPBINARY} "nisplus")
+                FIND3=$(${GREPBINARY} -E "^passwd" ${ROOTDIR}etc/nsswitch.conf | ${GREPBINARY} "nisplus")
                 if [ -n "${FIND2}" -o -n "${FIND3}" ]; then
                     LogText "Result: NIS+ authentication enabled"
                     Display --indent 2 --text "- NIS+ authentication support" --result "${STATUS_ENABLED}" --color GREEN
@@ -526,13 +526,13 @@
     Register --test-no AUTH-9242 --weight L --network NO --category security --description "Query NIS authentication support"
     if [ ${SKIPTEST} -eq 0 ]; then
         if [ -f /etc/nsswitch.conf ]; then
-            FIND=$(${EGREPBINARY} "^passwd" /etc/nsswitch.conf | ${EGREPBINARY} "compat|nis" | ${GREPBINARY} -v "nisplus")
+            FIND=$(${GREPBINARY} -E "^passwd" /etc/nsswitch.conf | ${GREPBINARY} -E "compat|nis" | ${GREPBINARY} -v "nisplus")
             if [ -z "${FIND}" ]; then
                 LogText "Result: NIS authentication not enabled"
                 Display --indent 2 --text "- NIS authentication support" --result "${STATUS_NOT_ENABLED}" --color WHITE
             else
-                FIND2=$(${EGREPBINARY} "^passwd_compat" /etc/nsswitch.conf | ${GREPBINARY} "nis" | ${GREPBINARY} -v "nisplus")
-                FIND3=$(${EGREPBINARY} "^passwd" /etc/nsswitch.conf | ${GREPBINARY} "nis" | ${GREPBINARY} -v "nisplus")
+                FIND2=$(${GREPBINARY} -E "^passwd_compat" /etc/nsswitch.conf | ${GREPBINARY} "nis" | ${GREPBINARY} -v "nisplus")
+                FIND3=$(${GREPBINARY} -E "^passwd" /etc/nsswitch.conf | ${GREPBINARY} "nis" | ${GREPBINARY} -v "nisplus")
                 if [ -n "${FIND2}" -o -n "${FIND3}" ]; then
                     LogText "Result: NIS authentication enabled"
                     Display --indent 2 --text "- NIS authentication support" --result "${STATUS_ENABLED}" --color GREEN
@@ -737,7 +737,7 @@
             LogText "Result: file ${ROOTDIR}etc/pam.conf exists"
             Display --indent 2 --text "- PAM configuration files (pam.conf)" --result "${STATUS_FOUND}" --color GREEN
             LogText "Test: searching PAM configuration files"
-            FIND=$(${EGREPBINARY} -v "^#" ${ROOTDIR}etc/pam.conf | ${EGREPBINARY} -v "^$" | ${SEDBINARY} 's/[[:space:]]/ /g' | ${SEDBINARY} 's/  / /g' | ${SEDBINARY} 's/ /:space:/g')
+            FIND=$(${GREPBINARY} -E -v "^#" ${ROOTDIR}etc/pam.conf | ${GREPBINARY} -E -v "^$" | ${SEDBINARY} 's/[[:space:]]/ /g' | ${SEDBINARY} 's/  / /g' | ${SEDBINARY} 's/ /:space:/g')
             if [ -z "${FIND}" ]; then
                 LogText "Result: File has no configuration options defined (empty, or only filled with comments and empty lines)"
             else
@@ -1017,7 +1017,7 @@
             LogText "Data: Days since epoch is ${DAYS_SINCE_EPOCH}"
             LogText "Test: collecting accounts which have an expired password (last day changed + maximum change time)"
             # Skip fields with a !, *, or x, or !* (field $3 is last changed, $5 is maximum changed)
-            FIND=$(${EGREPBINARY} -v ":[\!\*x]([\*\!])?:" /etc/shadow | ${AWKBINARY} -v today=${DAYS_SINCE_EPOCH} -F: '{ if (($5!="") && (today>$3+$5)) { print $1 }}')
+            FIND=$(${GREPBINARY} -E -v ":[\!\*x]([\*\!])?:" /etc/shadow | ${AWKBINARY} -v today=${DAYS_SINCE_EPOCH} -F: '{ if (($5!="") && (today>$3+$5)) { print $1 }}')
             if [ -n "${FIND}" ]; then
                 for ACCOUNT in ${FIND}; do
                     LogText "Result: password of user ${ACCOUNT} has been expired"
@@ -1109,8 +1109,8 @@
                 TEST_PERFORMED=1
                 LogText "Result: file ${ROOTDIR}etc/inittab exists"
                 LogText "Test: checking presence sulogin for single user mode"
-                FIND=$(${EGREPBINARY} "^[a-zA-Z0-9~]+:S:(respawn|wait):/sbin/sulogin" /etc/inittab)
-                FIND2=$(${EGREPBINARY} "^su:S:(respawn|wait):/sbin/sulogin" /etc/inittab)
+                FIND=$(${GREPBINARY} -E "^[a-zA-Z0-9~]+:S:(respawn|wait):/sbin/sulogin" /etc/inittab)
+                FIND2=$(${GREPBINARY} -E "^su:S:(respawn|wait):/sbin/sulogin" /etc/inittab)
                 if [ -n "${FIND}" -o -n "${FIND2}" ]; then
                     FOUND=1
                     LogText "Result: found sulogin, so single user is protected"
@@ -1147,7 +1147,7 @@
                     # Mark test as performed only when at least 1 target exists (e.g. Ubuntu 14.04 has limited systemd support)
                     TEST_PERFORMED=1
                     LogText "Result: found target ${I}"
-                    FIND=$(${EGREPBINARY} "^ExecStart=" ${FILE} | ${GREPBINARY} "sulogin")
+                    FIND=$(${GREPBINARY} -E "^ExecStart=" ${FILE} | ${GREPBINARY} "sulogin")
                     if [ "${FIND}" = "" ]; then
                         LogText "Result: did not find sulogin specified, possible risk of getting into single user mode without authentication"
                     else
@@ -1486,7 +1486,7 @@
     Register --test-no AUTH-9402 --weight L --network NO --category security --description "Query LDAP authentication support"
     if [ ${SKIPTEST} -eq 0 ]; then
         if [ -f ${ROOTDIR}etc/nsswitch.conf ]; then
-            FIND=$(${EGREPBINARY} "^passwd" ${ROOTDIR}etc/nsswitch.conf | ${GREPBINARY} "ldap")
+            FIND=$(${GREPBINARY} -E "^passwd" ${ROOTDIR}etc/nsswitch.conf | ${GREPBINARY} "ldap")
             if [ "${FIND}" = "" ]; then
                 LogText "Result: LDAP authentication not enabled"
                 Display --indent 2 --text "- LDAP authentication support" --result "${STATUS_NOT_ENABLED}" --color WHITE
@@ -1514,7 +1514,7 @@
                 LogText "Result: file ${FILE} exists, LDAP being used"
                 LDAP_CLIENT_CONFIG_FILE="${FILE}"
                 LogText "Test: checking LDAP servers in file ${FILE}"
-                FIND=$(${EGREPBINARY} "^host " ${FILE} | ${AWKBINARY} '{ print $2 }')
+                FIND=$(${GREPBINARY} -E "^host " ${FILE} | ${AWKBINARY} '{ print $2 }')
                 for SERVER in ${FIND}; do
                     Display --indent 6 --text "LDAP server: ${SERVER}"
                     LogText "Result: found LDAP server ${SERVER}"
diff --git a/include/tests_boot_services b/include/tests_boot_services
index 5901cd70..967b98a6 100644
--- a/include/tests_boot_services
+++ b/include/tests_boot_services
@@ -460,7 +460,7 @@
                 BOOT_LOADER_FOUND=1
                 Display --indent 2 --text "- Checking presence LILO" --result "${STATUS_OK}" --color GREEN
                 LogText "Checking password option LILO"
-                FIND=$(${EGREPBINARY} 'password[[:space:]]?=' ${LILOCONFFILE} | ${GREPBINARY} -v "^#")
+                FIND=$(${GREPBINARY} -E 'password[[:space:]]?=' ${LILOCONFFILE} | ${GREPBINARY} -v "^#")
                 if [ -z "${FIND}" ]; then
                     if [ "${MACHINE_ROLE}" = "server" -o "${MACHINE_ROLE}" = "workstation" ]; then
                         Display --indent 4 --text "- Password option presence " --result "${STATUS_WARNING}" --color RED
@@ -605,7 +605,7 @@
         else
             # FreeBSD (Read /etc/rc.conf file for enabled services)
             LogText "Searching for services at startup (rc.conf)"
-            FIND=$(${EGREPBINARY} -v -i '^#|none' ${ROOTDIR}etc/rc.conf | ${EGREPBINARY} -i '_enable.*(yes|on|1)' | ${SORTBINARY} | ${AWKBINARY} -F= '{ print $1 }' | ${SEDBINARY} 's/_enable//')
+            FIND=$(${GREPBINARY} -E -v -i '^#|none' ${ROOTDIR}etc/rc.conf | ${GREPBINARY} -E -i '_enable.*(yes|on|1)' | ${SORTBINARY} | ${AWKBINARY} -F= '{ print $1 }' | ${SEDBINARY} 's/_enable//')
         fi
         COUNT=0
         for ITEM in ${FIND}; do
@@ -715,7 +715,7 @@
             if [ -n "${CHKCONFIGBINARY}" ]; then
                 LogText "Result: chkconfig binary found, trying that to discover information"
                 LogText "Searching for services at startup (chkconfig, runlevel 3 and 5)"
-                FIND=$(${CHKCONFIGBINARY} --list | ${EGREPBINARY} '3:on|5:on' | ${AWKBINARY} '{ print $1 }')
+                FIND=$(${CHKCONFIGBINARY} --list | ${GREPBINARY} -E '3:on|5:on' | ${AWKBINARY} '{ print $1 }')
                 COUNT=0
                 Report "boot_service_tool=chkconfig"
                 for ITEM in ${FIND}; do
@@ -947,7 +947,7 @@
         if [ -f ${ROOTDIR}usr/lib/systemd/system/rescue.service ]; then
             LogText "Result: file /usr/lib/systemd/system/rescue.service"
             LogText "Test: checking presence sulogin for single user mode"
-            FIND=$(${EGREPBINARY} "^ExecStart=.*sulogin" ${ROOTDIR}usr/lib/systemd/system/rescue.service)
+            FIND=$(${GREPBINARY} -E "^ExecStart=.*sulogin" ${ROOTDIR}usr/lib/systemd/system/rescue.service)
             if [ -n "${FIND}" ]; then
                 FOUND=1
                 LogText "Result: found sulogin, so single user is protected"
@@ -981,14 +981,14 @@
                 Report "running_service[]=${ITEM}"
                 COUNT=$((COUNT + 1 ))
             done
-            LogText "Note: Run rcctl ls all | egrep  '^(pf|check_quotas|library_aslr)$' to see all daemons"
+            LogText "Note: Run rcctl ls all | grep -E '^(pf|check_quotas|library_aslr)$' to see all daemons"
             Display --indent 2 --text "- Check running daemons (rcctl)" --result "${STATUS_DONE}" --color GREEN
             Display --indent 8 --text "Result: found ${COUNT} running daemons"
             LogText "Result: Found ${COUNT} running daemons"
 
             # OpenBSD (Ask rcctl(8) for enabled daemons)
             LogText "Searching for enabled daemons (rcctl)"
-            FIND=$(${RCCTLBINARY} ls on | ${EGREPBINARY} -v '^(pf|check_quotas|library_aslr)$')
+            FIND=$(${RCCTLBINARY} ls on | ${GREPBINARY} -E -v '^(pf|check_quotas|library_aslr)$')
             COUNT=0
             Report "boot_service_tool=rcctl"
             for ITEM in ${FIND}; do
@@ -996,7 +996,7 @@
                 Report "boot_service[]=${ITEM}"
                 COUNT=$((COUNT + 1 ))
             done
-            LogText "Note: Run rcctl ls all | egrep  '^(pf|check_quotas|library_aslr)$' to see all daemons"
+            LogText "Note: Run rcctl ls all | grep -E  '^(pf|check_quotas|library_aslr)$' to see all daemons"
             Display --indent 2 --text "- Check enabled daemons at boot (rcctl)" --result "${STATUS_DONE}" --color GREEN
             Display --indent 8 --text "Result: found ${COUNT} enabled daemons at boot"
             LogText "Result: Found ${COUNT} enabled daemons at boot"
diff --git a/include/tests_containers b/include/tests_containers
index af10997d..a02ea268 100644
--- a/include/tests_containers
+++ b/include/tests_containers
@@ -137,7 +137,7 @@
 
         # Check total of containers
         LogText "Test: checking total amount of Docker containers"
-        DOCKER_CONTAINERS_TOTAL=$(${DOCKERBINARY} info 2> /dev/null | ${EGREPBINARY} "^[ \t]?Containers: " | ${AWKBINARY} '{ print $2 }')
+        DOCKER_CONTAINERS_TOTAL=$(${DOCKERBINARY} info 2> /dev/null | ${GREPBINARY} -E "^[ \t]?Containers: " | ${AWKBINARY} '{ print $2 }')
         if [ -z "${DOCKER_CONTAINERS_TOTAL}" ]; then
             DOCKER_CONTAINERS_TOTAL=0
         fi
diff --git a/include/tests_crypto b/include/tests_crypto
index 89ad1e62..a643b6c0 100644
--- a/include/tests_crypto
+++ b/include/tests_crypto
@@ -54,7 +54,7 @@
                     LASTSUBDIR=""
                     LogText "Result: found directory ${DIR}"
                     # Search for certificate files
-                    FILES=$(${FINDBINARY} ${DIR} -type f 2> /dev/null | ${EGREPBINARY} ".cer$|.crt$|.der$|.pem$|^cert" | ${SORTBINARY} | ${SEDBINARY} 's/ /__space__/g')
+                    FILES=$(${FINDBINARY} ${DIR} -type f 2> /dev/null | ${GREPBINARY} -E ".cer$|.crt$|.der$|.pem$|^cert" | ${SORTBINARY} | ${SEDBINARY} 's/ /__space__/g')
                     for FILE in ${FILES}; do
                         FILE=$(echo ${FILE} | ${SEDBINARY} 's/__space__/ /g')
                         # See if we need to skip this path
@@ -80,7 +80,7 @@
                             if [ ${CANREAD} -eq 1 ]; then
                                 # Only check the files that are not installed by a package, unless enabled by profile
                                 if [ ${SSL_CERTIFICATE_INCLUDE_PACKAGES} -eq 1 ] || ! FileInstalledByPackage "${FILE}"; then
-                                    echo ${FILE} | ${EGREPBINARY} -q ".cer$|.der$"
+                                    echo ${FILE} | ${GREPBINARY} -E -q ".cer$|.der$"
                                     CER_DER=$?
                                     OUTPUT=$(${GREPBINARY} -q 'BEGIN CERT' "${FILE}")
                                     if [ $? -eq 0 -o ${CER_DER} -eq 0 ]; then
diff --git a/include/tests_databases b/include/tests_databases
index e973d23f..181dac6c 100644
--- a/include/tests_databases
+++ b/include/tests_databases
@@ -45,7 +45,7 @@
     # Description : Check if MySQL is being used
     Register --test-no DBS-1804 --weight L --network NO --category security --description "Checking active MySQL process"
     if [ ${SKIPTEST} -eq 0 ]; then
-        FIND=$(${PSBINARY} ax | ${EGREPBINARY} "mariadb|mysqld|mysqld_safe" | ${GREPBINARY} -v "grep")
+        FIND=$(${PSBINARY} ax | ${GREPBINARY} -E "mariadb|mysqld|mysqld_safe" | ${GREPBINARY} -v "grep")
         if [ -z "${FIND}" ]; then
             if [ ${DEBUG} -eq 1 ]; then Display --indent 2 --text "- MySQL process status" --result "${STATUS_NOT_FOUND}" --color WHITE --debug; fi
             LogText "Result: MySQL process not active"
@@ -244,7 +244,7 @@
     #               reco: recovery (optional)
     Register --test-no DBS-1840 --weight L --network NO --category security --description "Checking active Oracle processes"
     if [ ${SKIPTEST} -eq 0 ]; then
-        FIND=$(${PSBINARY} ax | ${EGREPBINARY} "ora_pmon|ora_smon|tnslsnr" | ${GREPBINARY} -v "grep")
+        FIND=$(${PSBINARY} ax | ${GREPBINARY} -E "ora_pmon|ora_smon|tnslsnr" | ${GREPBINARY} -v "grep")
         if [ -z "${FIND}" ]; then
             if [ ${DEBUG} -eq 1 ]; then Display --indent 2 --text "- Oracle processes status" --result "${STATUS_NOT_FOUND}" --color WHITE --debug; fi
             LogText "Result: Oracle process(es) not active"
diff --git a/include/tests_file_integrity b/include/tests_file_integrity
index 8a38b97e..daf49196 100644
--- a/include/tests_file_integrity
+++ b/include/tests_file_integrity
@@ -104,7 +104,7 @@
     if [ -n "${AIDEBINARY}" -a -n "${AIDECONFIG}" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
     Register --test-no FINT-4316 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Presence of AIDE database and size check"
     if [ ${SKIPTEST} -eq 0 ]; then
-        AIDE_DB=$(${EGREPBINARY} '(^database|^database_in)=' ${AIDECONFIG} | ${SEDBINARY} "s/.*://")
+        AIDE_DB=$(${GREPBINARY} -E '(^database|^database_in)=' ${AIDECONFIG} | ${SEDBINARY} "s/.*://")
         if case ${AIDE_DB} in @@*) ;; *) false;; esac; then
             I=$(${GREPBINARY} "@@define.*DBDIR" ${AIDECONFIG} | ${AWKBINARY} '{print $3}')
             AIDE_DB=$(echo ${AIDE_DB} | ${SEDBINARY} "s#.*}#${I}#")
@@ -330,7 +330,7 @@
 	ROOTDEVICE=$(${MOUNTBINARY} | ${AWKBINARY} '/ on \/ type / { print $1 }')
 	for DEVICE in /dev/mapper/*; do
 	    if [ -e "${DEVICE}" ]; then
-		FIND=$(${INTEGRITYSETUPBINARY} status "${DEVICE}" | ${EGREPBINARY} 'type:.*INTEGRITY')
+		FIND=$(${INTEGRITYSETUPBINARY} status "${DEVICE}" | ${GREPBINARY} -E 'type:.*INTEGRITY')
 		if [ ! -z "${FIND}" ]; then
 		    FOUND=1
 		    LogText "Result: found dm-integrity device ${DEVICE}"
@@ -370,7 +370,7 @@
 	ROOTDEVICE=$(${MOUNTBINARY} | ${AWKBINARY} '/ on \/ type / { print $1 }')
 	for DEVICE in /dev/mapper/*; do
 	    if [ -e "${DEVICE}" ]; then
-		FIND=$(${VERITYSETUPBINARY} status "${DEVICE}" | ${EGREPBINARY} 'type:.*VERITY')
+		FIND=$(${VERITYSETUPBINARY} status "${DEVICE}" | ${GREPBINARY} -E 'type:.*VERITY')
 		if [ ! -z "${FIND}" ]; then
 		    FOUND=1
 		    LogText "Result: found dm-verity device ${DEVICE}"
@@ -404,7 +404,7 @@
     if [ ! "${AIDEBINARY}" = "" -a -n "${AIDECONFIG}" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
     Register --test-no FINT-4402 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "AIDE configuration: Checksums (SHA256 or SHA512)"
     if [ ${SKIPTEST} -eq 0 ]; then
-        FIND=$(${GREPBINARY} -v "^#" ${AIDECONFIG} | ${EGREPBINARY} "= .*(sha256|sha512)")
+        FIND=$(${GREPBINARY} -v "^#" ${AIDECONFIG} | ${GREPBINARY} -E "= .*(sha256|sha512)")
         if [ -z "${FIND}" ]; then
             LogText "Result: No SHA256 or SHA512 found for creating checksums"
             Display --indent 6 --text "- AIDE config (Checksum)" --result Suggestion --color YELLOW
diff --git a/include/tests_file_permissions b/include/tests_file_permissions
index 32598f45..924dad12 100644
--- a/include/tests_file_permissions
+++ b/include/tests_file_permissions
@@ -35,7 +35,7 @@
         FOUND=0
         for PROFILE in ${PROFILES}; do
             LogText "Using profile ${PROFILE} for baseline."
-            FILES=$(${EGREPBINARY} '^permfile=|^permdir=' ${PROFILE} | ${CUTBINARY} -d= -f2 | ${CUTBINARY} -d: -f1)
+            FILES=$(${GREPBINARY} -E '^permfile=|^permdir=' ${PROFILE} | ${CUTBINARY} -d= -f2 | ${CUTBINARY} -d: -f1)
             for F in ${FILES}; do
                 LogText "Test: checking file/directory ${F}"
                 if [ -f "${F}" ]; then
diff --git a/include/tests_filesystems b/include/tests_filesystems
index ab6191aa..93af33ed 100644
--- a/include/tests_filesystems
+++ b/include/tests_filesystems
@@ -356,7 +356,7 @@
         # Proc should be mounted with 'hidepid=2' or 'hidepid=1' at least
         # https://www.kernel.org/doc/html/latest/filesystems/proc.html#chapter-4-configuring-procfs
         LogText "Test: check proc mount with incorrect mount options"
-        FIND=$(${MOUNTBINARY} | ${EGREPBINARY} "${ROOTDIR}proc " | ${EGREPBINARY} -o "hidepid=([0-9]|[a-z][a-z]*)")
+        FIND=$(${MOUNTBINARY} | ${GREPBINARY} -E "${ROOTDIR}proc " | ${GREPBINARY} -E -o "hidepid=([0-9]|[a-z][a-z]*)")
         if [ "${FIND}" = "hidepid=4" -o "${FIND}" = "hidepid=ptraceable" ]; then  # https://lwn.net/Articles/817137/
             Display --indent 2 --text "- Testing /proc mount (hidepid)" --result "${STATUS_OK}" --color GREEN
             LogText "Result: proc mount mounted with ${FIND}"
@@ -504,7 +504,7 @@
         fi
 
         LogText "Test: Checking acl option on xfs root file system"
-        FIND=$(${MOUNTBINARY} | ${AWKBINARY} '{ if ($3=="/" && $5~/xfs/) { print $6 } }' | ${EGREPBINARY} 'no_acl|no_user_xattr')
+        FIND=$(${MOUNTBINARY} | ${AWKBINARY} '{ if ($3=="/" && $5~/xfs/) { print $6 } }' | ${GREPBINARY} -E 'no_acl|no_user_xattr')
         if [ -z "${FIND}" ]; then
             FOUND=1
             # some other tests to do ?
@@ -638,7 +638,7 @@
         NDEVMOUNTS=$(mount | ${AWKBINARY} '{print $6}' | ${GREPBINARY} -v nodev | ${WCBINARY} -l)
         NEXECMOUNTS=$(mount | ${AWKBINARY} '{print $6}' | ${GREPBINARY} -v noexec | ${WCBINARY} -l)
         NSUIDMOUNTS=$(mount | ${AWKBINARY} '{print $6}' | ${GREPBINARY} -v nosuid | ${WCBINARY} -l)
-        NWRITEANDEXECMOUNTS=$(mount | ${AWKBINARY} '{print $6}' | ${GREPBINARY} -v noexec | ${EGREPBINARY} -v '^\(ro[,)]' | ${WCBINARY} -l)
+        NWRITEANDEXECMOUNTS=$(mount | ${AWKBINARY} '{print $6}' | ${GREPBINARY} -v noexec | ${GREPBINARY} -E -v '^\(ro[,)]' | ${WCBINARY} -l)
         LogText "Result: Total without nodev:${NDEVMOUNTS} noexec:${NEXECMOUNTS} nosuid:${NSUIDMOUNTS} ro or noexec (W^X): ${NWRITEANDEXECMOUNTS}, of total ${NMOUNTS}"
         Display --indent 2 --text "- Total without nodev:${NDEVMOUNTS} noexec:${NEXECMOUNTS} nosuid:${NSUIDMOUNTS} ro or noexec (W^X): ${NWRITEANDEXECMOUNTS} of total ${NMOUNTS}"
     fi
@@ -814,13 +814,13 @@
             AVAILABLE_MODPROBE_FS=""
             for FS in ${LIST_FS_NOT_SUPPORTED}; do
                 # Check if filesystem is present in modprobe output
-                FIND=$(${MODPROBEBINARY} -v -n ${FS} 2>/dev/null | ${EGREPBINARY} "/${FS}.ko" | ${TAILBINARY} -1)
+                FIND=$(${MODPROBEBINARY} -v -n ${FS} 2>/dev/null | ${GREPBINARY} -E "/${FS}.ko" | ${TAILBINARY} -1)
                 if [ -n "${FIND}" ]; then
                     LogText "Result: found ${FS} support in the kernel (output = ${FIND})"
                     Debug "Module ${FS} present in the kernel"
                     LogText "Test: Checking if ${FS} is active"
                     # Check if FS is present in lsmod output
-                    FIND=$(${LSMODBINARY} | ${EGREPBINARY} "^${FS}")
+                    FIND=$(${LSMODBINARY} | ${GREPBINARY} -E "^${FS}")
                     if IsEmpty "${FIND}"; then
                         LogText "Result: module ${FS} is currently not loaded in the kernel."
                         AddHP 2 3
@@ -837,8 +837,8 @@
                 fi
                 FIND=$(${LSBINARY} ${ROOTDIR}etc/modprobe.d/* 2> /dev/null)
                 if [ -n "${FIND}" ]; then
-                    FIND1=$(${EGREPBINARY} "^blacklist \+${FS}$" ${ROOTDIR}etc/modprobe.d/* | ${GREPBINARY} -v "#")
-                    FIND2=$(${EGREPBINARY} "^install \+${FS} \+/bin/true$" ${ROOTDIR}etc/modprobe.d/* | ${GREPBINARY} -v "#")
+                    FIND1=$(${GREPBINARY} -E "^blacklist \+${FS}$" ${ROOTDIR}etc/modprobe.d/* | ${GREPBINARY} -v "#")
+                    FIND2=$(${GREPBINARY} -E "^install \+${FS} \+/bin/true$" ${ROOTDIR}etc/modprobe.d/* | ${GREPBINARY} -v "#")
                         if [ -n "${FIND1}" ] || [ -n "${FIND2}" ]; then
                             Display --indent 4 --text "- Module $FS is blacklisted" --result "OK" --color GREEN
                             LogText "Result: module ${FS} is blacklisted"
diff --git a/include/tests_firewalls b/include/tests_firewalls
index 44d6c441..6852b536 100644
--- a/include/tests_firewalls
+++ b/include/tests_firewalls
@@ -112,7 +112,7 @@
         TABLES="filter"
         for TABLE in ${TABLES}; do
             LogText "Test: gathering information from table ${TABLE}"
-            FIND="$FIND""\n"$(${IPTABLESBINARY} -t ${TABLE} --numeric --list | ${EGREPBINARY}  -z -o -w  '[A-Z]+' | tr -d '\0' | ${AWKBINARY} -v t=${TABLE} 'NR%2 {printf "%s %s ",t, $0 ; next;}1')
+            FIND="$FIND""\n"$(${IPTABLESBINARY} -t ${TABLE} --numeric --list | ${GREPBINARY} -E  -z -o -w  '[A-Z]+' | tr -d '\0' | ${AWKBINARY} -v t=${TABLE} 'NR%2 {printf "%s %s ",t, $0 ; next;}1')
         done
 
         echo "${FIND}" | while read -r line; do
@@ -154,7 +154,7 @@
     if [ -n "${IPTABLESBINARY}" -a ${IPTABLES_ACTIVE} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
     Register --test-no FIRE-4512 --preqs-met ${PREQS_MET} --os Linux --weight L --network NO --root-only YES --category security --description "Check iptables for empty ruleset"
     if [ ${SKIPTEST} -eq 0 ]; then
-        FIND=$(${IPTABLESBINARY} --list --numeric 2> /dev/null | ${EGREPBINARY} -v "^(Chain|target|$)" | ${WCBINARY} -l | ${TRBINARY} -d ' ')
+        FIND=$(${IPTABLESBINARY} --list --numeric 2> /dev/null | ${GREPBINARY} -E -v "^(Chain|target|$)" | ${WCBINARY} -l | ${TRBINARY} -d ' ')
         if [ -n "${FIND}" ]; then
             FIREWALL_ACTIVE=1
             if [ ${FIND} -le 5 ]; then
@@ -506,7 +506,7 @@
     Register --test-no FIRE-4540 --os Linux --preqs-met ${PREQS_MET} --weight L --network NO --root-only YES --category security --description "Check for empty nftables configuration"
     if [ ${SKIPTEST} -eq 0 ]; then
         # Check for empty ruleset
-        NFT_RULES_LENGTH=$(${NFTBINARY} --stateless list ruleset 2> /dev/null | ${EGREPBINARY} -v "table|chain|;$|}$|^$" | ${WCBINARY} -l)
+        NFT_RULES_LENGTH=$(${NFTBINARY} --stateless list ruleset 2> /dev/null | ${GREPBINARY} -E -v "table|chain|;$|}$|^$" | ${WCBINARY} -l)
         if [ ${NFT_RULES_LENGTH} -le 3 ]; then
             FIREWALL_EMPTY_RULESET=1
             LogText "Result: this firewall set has 3 rules or less and is considered to be empty"
diff --git a/include/tests_homedirs b/include/tests_homedirs
index 3e5f1b78..77de47f4 100644
--- a/include/tests_homedirs
+++ b/include/tests_homedirs
@@ -57,7 +57,7 @@
     if [ ${SKIPTEST} -eq 0 ]; then
         # Check if users' home directories permissions are 750 or more restrictive
         FOUND=0
-        USERDATA=$(${EGREPBINARY} -v '^(daemon|git|halt|root|shutdown|sync)' ${ROOTDIR}etc/passwd | ${AWKBINARY} -F: '($7 !~ "/(false|nologin)$") { print }')
+        USERDATA=$(${GREPBINARY} -E -v '^(daemon|git|halt|root|shutdown|sync)' ${ROOTDIR}etc/passwd | ${AWKBINARY} -F: '($7 !~ "/(false|nologin)$") { print }')
         while read -r LINE; do
             USER=$(echo ${LINE} | ${CUTBINARY} -d: -f1)
             DIR=$(echo ${LINE} | ${CUTBINARY} -d: -f6)
@@ -93,7 +93,7 @@ EOF
     if [ ${SKIPTEST} -eq 0 ]; then
         # Check if users own their home directories
         FOUND=0
-        USERDATA=$(${EGREPBINARY} -v '^(daemon|git|halt|root|shutdown|sync)' ${ROOTDIR}etc/passwd | ${AWKBINARY} -F: '($7 !~ "/(false|nologin)$") { print }')
+        USERDATA=$(${GREPBINARY} -E -v '^(daemon|git|halt|root|shutdown|sync)' ${ROOTDIR}etc/passwd | ${AWKBINARY} -F: '($7 !~ "/(false|nologin)$") { print }')
         while read -r LINE; do
             USER=$(echo ${LINE} | ${CUTBINARY} -d: -f1)
             DIR=$(echo ${LINE} | ${CUTBINARY} -d: -f6)
diff --git a/include/tests_insecure_services b/include/tests_insecure_services
index f01966f2..c86070c0 100644
--- a/include/tests_insecure_services
+++ b/include/tests_insecure_services
@@ -298,7 +298,7 @@
     #if [ ${SKIPTEST} -eq 0 ]; then
     #    # Check presence of Rsh Trust Files
     #    FOUND=0
-    #    for LINE in $(${CAT_BINARY} /etc/passwd | ${EGREPBINARY} -v '^(root|halt|sync|shutdown)' | ${AWKBINARY} -F: '($7 !="/sbin/nologin" && $7 != "/bin/false") { print }'); do
+    #    for LINE in $(${CAT_BINARY} /etc/passwd | ${GREPBINARY} -E -v '^(root|halt|sync|shutdown)' | ${AWKBINARY} -F: '($7 !="/sbin/nologin" && $7 != "/bin/false") { print }'); do
     #        USER=$(echo ${LINE} | ${CUTBINARY} -d: -f1)
     #        DIR=$(echo ${LINE} | ${CUTBINARY} -d: -f6)
     #            if [ -d ${DIR} ]; then
diff --git a/include/tests_kernel b/include/tests_kernel
index ad914bfb..bba8080f 100644
--- a/include/tests_kernel
+++ b/include/tests_kernel
@@ -49,7 +49,7 @@
                     LogText "Exception: can't find the target of the symlink of /etc/systemd/system/default.target"
                     ReportException "${TEST_NO}:01"
                 else
-                    FIND2=$(${ECHOCMD} ${FIND} | ${EGREPBINARY} "runlevel5|graphical")
+                    FIND2=$(${ECHOCMD} ${FIND} | ${GREPBINARY} -E "runlevel5|graphical")
                     if HasData "${FIND2}"; then
                         LogText "Result: Found match on runlevel5/graphical"
                         Display --indent 2 --text "- Checking default runlevel" --result "runlevel 5" --color GREEN
@@ -401,7 +401,7 @@
             elif [ -e ${ROOTDIR}etc/rpi-issue ]; then
                 FINDKERNEL="raspberrypi-kernel"
                 LogText "Result: ${ROOTDIR}vmlinuz missing due to Raspbian"
-            elif $(${EGREPBINARY} -q 'do_symlinks.*=.*No' ${ROOTDIR}etc/kernel-img.conf); then
+            elif $(${GREPBINARY} -E -q 'do_symlinks.*=.*No' ${ROOTDIR}etc/kernel-img.conf); then
                 FINDKERNEL="linux-image-$(uname -r)"
                 LogText "Result: ${ROOTDIR}vmlinuz missing due to /etc/kernel-img.conf item do_symlinks = No"
             else
@@ -414,8 +414,8 @@
             else
                 LogText "Result: found kernel '${FINDKERNEL}' which will be used for further testing"
                 LogText "Test: Using apt-cache policy to determine if there is an update available"
-                FINDINSTALLED=$(apt-cache policy ${FINDKERNEL} | ${EGREPBINARY} 'Installed' | ${CUTBINARY} -d ':' -f2 | ${TRBINARY} -d ' ')
-                FINDCANDIDATE=$(apt-cache policy ${FINDKERNEL} | ${EGREPBINARY} 'Candidate' | ${CUTBINARY} -d ':' -f2 | ${TRBINARY} -d ' ')
+                FINDINSTALLED=$(apt-cache policy ${FINDKERNEL} | ${GREPBINARY} -E 'Installed' | ${CUTBINARY} -d ':' -f2 | ${TRBINARY} -d ' ')
+                FINDCANDIDATE=$(apt-cache policy ${FINDKERNEL} | ${GREPBINARY} -E 'Candidate' | ${CUTBINARY} -d ':' -f2 | ${TRBINARY} -d ' ')
                 LogText "Kernel installed: ${FINDINSTALLED}"
                 LogText "Kernel candidate: ${FINDCANDIDATE}"
                 if IsEmpty "${FINDINSTALLED}"; then
@@ -826,7 +826,7 @@
             LogText "Check: try to find raspberrypi-kernel file in ${APT_ARCHIVE_DIRECTORY} and extract package date from file name"
 
             FOUND_KERNEL_DATE=$(${FINDBINARY} ${APT_ARCHIVE_DIRECTORY} -name "raspberrypi-kernel*" -printf "%T@ %Tc %p\n" 2> /dev/null \
-            | ${SORTBINARY} -nr | ${HEADBINARY} -1 | ${GREPBINARY} -o "raspberrypi-kernel.*deb" | ${EGREPBINARY} -o "\.[0-9]+" | ${SEDBINARY} 's/\.//g')
+            | ${SORTBINARY} -nr | ${HEADBINARY} -1 | ${GREPBINARY} -o "raspberrypi-kernel.*deb" | ${GREPBINARY} -E -o "\.[0-9]+" | ${SEDBINARY} 's/\.//g')
 
             if [ -n "${FOUND_KERNEL_DATE}" ]; then
                 FOUND_KERNEL_IN_SECONDS=$(date -d "${FOUND_KERNEL_DATE}" "+%s" 2> /dev/null)
@@ -851,21 +851,21 @@
                             next="month"
                         fi
                     elif [ "$next" = "month" ]; then
-                        if [ $(${ECHOCMD} "${part}" | ${EGREPBINARY} -c "[A-Z][a-z]") -ge 1 ]; then
+                        if [ $(${ECHOCMD} "${part}" | ${GREPBINARY} -E -c "[A-Z][a-z]") -ge 1 ]; then
                             UNAME_DATE_MONTH="${part}"
                             next="day"
                         fi
                     elif [ "${next}" = "day" ]; then
-                        if [ $(${ECHOCMD} ${part} | ${EGREPBINARY} -c "[0-9][0-9]") -ge 1 ]; then
+                        if [ $(${ECHOCMD} ${part} | ${GREPBINARY} -E -c "[0-9][0-9]") -ge 1 ]; then
                             UNAME_DATE_DAY="${part}"
                             next="time"
                         fi
                     elif [ "${next}" = "time" ]; then
-                        if [ $(${ECHOCMD} ${part} | ${EGREPBINARY} -c ":[0-9][0-9]:") -ge 1 ]; then
+                        if [ $(${ECHOCMD} ${part} | ${GREPBINARY} -E -c ":[0-9][0-9]:") -ge 1 ]; then
                             next="year"
                         fi
                     elif [ "${next}" = "year" ]; then
-                        if [ $(${ECHOCMD} ${part} | ${EGREPBINARY} -c "[0-9][0-9]") -ge 1 ]; then
+                        if [ $(${ECHOCMD} ${part} | ${GREPBINARY} -E -c "[0-9][0-9]") -ge 1 ]; then
                             UNAME_DATE_YEAR="${part}"
                             break
                         fi
diff --git a/include/tests_logging b/include/tests_logging
index b6acdbe5..04bee67d 100644
--- a/include/tests_logging
+++ b/include/tests_logging
@@ -45,7 +45,7 @@
     Register --test-no LOGG-2130 --weight L --network NO --category security --description "Check for running syslog daemon"
     if [ ${SKIPTEST} -eq 0 ]; then
         LogText "Test: Searching for a logging daemon"
-        FIND=$(${PSBINARY} ax | ${EGREPBINARY} "syslogd|syslog-ng|metalog|systemd-journal" | ${GREPBINARY} -v "grep")
+        FIND=$(${PSBINARY} ax | ${GREPBINARY} -E "syslogd|syslog-ng|metalog|systemd-journal" | ${GREPBINARY} -v "grep")
         if [ -z "${FIND}" ]; then
             Display --indent 2 --text "- Checking for a running log daemon" --result "${STATUS_WARNING}" --color RED
             LogText "Result: Could not find a syslog daemon like syslog, syslog-ng, rsyslog, metalog, systemd-journal"
@@ -261,7 +261,7 @@
     Register --test-no LOGG-2148 --weight L --preqs-met ${PREQS_MET} --network NO --category security --description "Checking logrotated files"
     if [ ${SKIPTEST} -eq 0 ]; then
         LogText "Test: Checking which files are rotated with logrotate and if they exist"
-        FIND=$(${LOGROTATEBINARY} -d -v ${ROOTDIR}etc/logrotate.conf 2>&1 | ${EGREPBINARY} "considering log|skipping" | ${GREPBINARY} -v '*' | ${SORTBINARY} -u | ${AWKBINARY} '{ if ($2!="log") { print "File:"$2":does_not_exist" } else { print "File:"$3":exists" } }')
+        FIND=$(${LOGROTATEBINARY} -d -v ${ROOTDIR}etc/logrotate.conf 2>&1 | ${GREPBINARY} -E "considering log|skipping" | ${GREPBINARY} -v '*' | ${SORTBINARY} -u | ${AWKBINARY} '{ if ($2!="log") { print "File:"$2":does_not_exist" } else { print "File:"$3":exists" } }')
         if [ -z "${FIND}" ]; then
             LogText "Result: nothing found"
         else
@@ -280,7 +280,7 @@
     Register --test-no LOGG-2150 --weight L --preqs-met ${PREQS_MET} --network NO --category security --description "Checking directories in logrotate configuration"
     if [ ${SKIPTEST} -eq 0 ]; then
         LogText "Test: Checking which directories can be found in logrotate configuration"
-        FIND=$(${LOGROTATEBINARY} -d -v ${ROOTDIR}etc/logrotate.conf 2>&1 | ${EGREPBINARY} "considering log|skipping" | ${GREPBINARY} -v '*' | ${SORTBINARY} -u | ${AWKBINARY} '{ if ($2=="log") { print $3 } }' | ${SEDBINARY} 's@/[^/]*$@@g' | ${SORTBINARY} -u)
+        FIND=$(${LOGROTATEBINARY} -d -v ${ROOTDIR}etc/logrotate.conf 2>&1 | ${GREPBINARY} -E "considering log|skipping" | ${GREPBINARY} -v '*' | ${SORTBINARY} -u | ${AWKBINARY} '{ if ($2=="log") { print $3 } }' | ${SEDBINARY} 's@/[^/]*$@@g' | ${SORTBINARY} -u)
         if IsEmpty "${FIND}"; then
             LogText "Result: nothing found"
         else
@@ -345,7 +345,7 @@
     if [ ${SOLARIS_LOGHOST_FOUND} -eq 1 ] && [ -n "${SOLARIS_LOGHOST}" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
     Register --test-no LOGG-2153 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Checking loghost is localhost"
     if [ ${SKIPTEST} -eq 0 ]; then
-        FIND=$(echo "${SOLARIS_LOGHOST}" | ${AWKBINARY} '{ print $1 }' | ${EGREPBINARY} "::1|127.0.0.1|127.1")
+        FIND=$(echo "${SOLARIS_LOGHOST}" | ${AWKBINARY} '{ print $1 }' | ${GREPBINARY} -E "::1|127.0.0.1|127.1")
         if [ -n "${FIND}" ]; then
             SOLARIS_LOGHOST_LOCALHOST=1
             LogText "Result: loghost entry is localhost (default)"
@@ -371,7 +371,7 @@
             TARGET="${ROOTDIR}etc/rsyslog.conf"
             if [ -f ${TARGET} ]; then
                 LogText "Test: analyzing file ${TARGET} for remote target"
-                DATA=$(${EGREPBINARY} "@@?([a-zA-Z0-9\-])+(\.)?(([a-zA-Z0-9-])+)?(\.)?(([a-zA-Z0-9-])+)?(\.)?(([a-zA-Z0-9-])+)?(\.)?(([a-zA-Z0-9-])+)?" ${TARGET} | ${GREPBINARY} -v "#" | ${TRBINARY} -cd "[:print:]\n" | ${SEDBINARY} 's/[[:blank:]]\{1,\}/:space:/g')
+                DATA=$(${GREPBINARY} -E "@@?([a-zA-Z0-9\-])+(\.)?(([a-zA-Z0-9-])+)?(\.)?(([a-zA-Z0-9-])+)?(\.)?(([a-zA-Z0-9-])+)?(\.)?(([a-zA-Z0-9-])+)?" ${TARGET} | ${GREPBINARY} -v "#" | ${TRBINARY} -cd "[:print:]\n" | ${SEDBINARY} 's/[[:blank:]]\{1,\}/:space:/g')
                 if [ -z "${DATA}" ]; then
                     LogText "Result: no remote target found"
                 else
@@ -391,7 +391,7 @@
                 for F in ${FILES}; do
                     F=$(echo ${F} | ${SEDBINARY} 's/:space:/ /g')
                     LogText "Test: analyzing file ${F} for remote target"
-                    DATA=$(${EGREPBINARY} "@@?([a-zA-Z0-9\-])+(\.)?(([a-zA-Z0-9-])+)?(\.)?(([a-zA-Z0-9-])+)?(\.)?(([a-zA-Z0-9-])+)?(\.)?(([a-zA-Z0-9-])+)?" ${F} | ${GREPBINARY} -v "#" | ${TRBINARY} -cd "[:print:]\n" | ${SEDBINARY} 's/[[:blank:]]\{1,\}/:space:/g')
+                    DATA=$(${GREPBINARY} -E "@@?([a-zA-Z0-9\-])+(\.)?(([a-zA-Z0-9-])+)?(\.)?(([a-zA-Z0-9-])+)?(\.)?(([a-zA-Z0-9-])+)?(\.)?(([a-zA-Z0-9-])+)?" ${F} | ${GREPBINARY} -v "#" | ${TRBINARY} -cd "[:print:]\n" | ${SEDBINARY} 's/[[:blank:]]\{1,\}/:space:/g')
                     if [ -n "${DATA}" ]; then
                         LogText "Result: found remote target"
                         REMOTE_LOGGING_ENABLED=1
@@ -403,7 +403,7 @@
                         done
                     else
                         # Check new style configuration (omrelp/omfwd). This can be all on one line or even split over multiple lines.
-                        DATA=$(${EGREPBINARY} "target=\"([a-zA-Z0-9\-])" ${F})
+                        DATA=$(${GREPBINARY} -E "target=\"([a-zA-Z0-9\-])" ${F})
                         if [ -n "${DATA}" ]; then
                             LogText "Result: most likely remote log host is used, as keyword 'target' is used"
                             REMOTE_LOGGING_ENABLED=1
@@ -424,7 +424,7 @@
 
         if [ -f ${SYSLOGD_CONF} ]; then
             LogText "Test: check if logs are also logged to a remote logging host"
-            FIND=$(${EGREPBINARY} "@[a-zA-Z0-9]|destination\s.+(udp|tcp).+\sport" ${SYSLOGD_CONF} | ${GREPBINARY} -v "^#" | ${GREPBINARY} -v "[a-zA-Z0-9]@")
+            FIND=$(${GREPBINARY} -E "@[a-zA-Z0-9]|destination\s.+(udp|tcp).+\sport" ${SYSLOGD_CONF} | ${GREPBINARY} -v "^#" | ${GREPBINARY} -v "[a-zA-Z0-9]@")
             if [ -n "${FIND}" ]; then
                 FIND2=$(echo "${FIND}" | ${GREPBINARY} -v "@loghost")
                 if [ ${SOLARIS_LOGHOST_LOCALHOST} -eq 1 ] && [ -z "${FIND2}" ]; then
@@ -435,9 +435,9 @@
                 fi
             else
                 # Search for configured destinations with an IP address or hostname, then determine which ones are used as a log destination
-                DESTINATIONS=$(${GREPBINARY} "^destination" ${SYSLOGD_CONF} | ${EGREPBINARY} "(udp|tcp)" | ${GREPBINARY} "port" | ${AWKBINARY} '{print $2}')
+                DESTINATIONS=$(${GREPBINARY} "^destination" ${SYSLOGD_CONF} | ${GREPBINARY} -E "(udp|tcp)" | ${GREPBINARY} "port" | ${AWKBINARY} '{print $2}')
                 for DESTINATION in ${DESTINATIONS}; do
-                    FIND2=$(${GREPBINARY} "log" ${SYSLOGD_CONF} | ${GREPBINARY} "source" | ${EGREPBINARY} "destination\(${DESTINATION}\)")
+                    FIND2=$(${GREPBINARY} "log" ${SYSLOGD_CONF} | ${GREPBINARY} "source" | ${GREPBINARY} -E "destination\(${DESTINATION}\)")
                     if [ -n "${FIND2}" ]; then
                         LogText "Result: found destination ${DESTINATION} configured for remote logging"
                         REMOTE_LOGGING_ENABLED=1
@@ -539,7 +539,7 @@
     if [ ${SKIPTEST} -eq 0 ]; then
         LogText "Test: checking open log files with lsof"
         if [ -n "${LSOFBINARY}" ]; then
-            FIND=$(${LSOFBINARY}${LSOF_EXTRA_OPTIONS} -n 2>&1 | ${GREPBINARY} "log$" | ${EGREPBINARY} -v "WARNING|Output information" | ${AWKBINARY} '{ if ($5=="REG") { print $9 } }' | ${SORTBINARY} -u | ${GREPBINARY} -v "^$")
+            FIND=$(${LSOFBINARY}${LSOF_EXTRA_OPTIONS} -n 2>&1 | ${GREPBINARY} "log$" | ${GREPBINARY} -E -v "WARNING|Output information" | ${AWKBINARY} '{ if ($5=="REG") { print $9 } }' | ${SORTBINARY} -u | ${GREPBINARY} -v "^$")
             for I in ${FIND}; do
                 LogText "Found logfile: ${I}"
             done
@@ -572,7 +572,7 @@
             LSOF_GREP="${LSOF_GREP}|anacron|awk|run-parts"
         fi
 
-        FIND=$(${LSOFBINARY}${LSOF_EXTRA_OPTIONS} -n +L 1 2>&1 | ${EGREPBINARY} -vw "${LSOF_GREP}" | ${EGREPBINARY} -v '/dev/zero|/\[aio\]' | ${AWKBINARY} '{ if ($5=="REG") { printf "%s(%s)\n", $10, $1 } }' | ${GREPBINARY} -v "^$" | ${SORTBINARY} -u)
+        FIND=$(${LSOFBINARY}${LSOF_EXTRA_OPTIONS} -n +L 1 2>&1 | ${GREPBINARY} -E -vw "${LSOF_GREP}" | ${GREPBINARY} -E -v '/dev/zero|/\[aio\]' | ${AWKBINARY} '{ if ($5=="REG") { printf "%s(%s)\n", $10, $1 } }' | ${GREPBINARY} -v "^$" | ${SORTBINARY} -u)
         if [ -n "${FIND}" ]; then
             LogText "Result: found one or more files which are deleted, but still in use"
             for I in ${FIND}; do
diff --git a/include/tests_mail_messaging b/include/tests_mail_messaging
index a8e9ec3b..8d4ae929 100644
--- a/include/tests_mail_messaging
+++ b/include/tests_mail_messaging
@@ -70,18 +70,18 @@
         unset FIND FIND2 FIND3 FIND4
 
         # Local Only
-        FIND=$(echo "${EXIM_ROUTERS}" | ${EGREPBINARY} '^nonlocal')
+        FIND=$(echo "${EXIM_ROUTERS}" | ${GREPBINARY} -E '^nonlocal')
         # Internet Host
-        FIND2=$(echo "${EXIM_ROUTERS}" | ${EGREPBINARY} '^dnslookup_relay_to_domains')
+        FIND2=$(echo "${EXIM_ROUTERS}" | ${GREPBINARY} -E '^dnslookup_relay_to_domains')
         # Smarthost or Satellite
-        FIND3=$(echo "${EXIM_ROUTERS}" | ${EGREPBINARY} '^smarthost')
+        FIND3=$(echo "${EXIM_ROUTERS}" | ${GREPBINARY} -E '^smarthost')
 
         if [ -n "${FIND}" ]; then
             EXIM_TYPE="LOCAL ONLY"
         elif [ -n "${FIND2}" ]; then
             EXIM_TYPE="INTERNET HOST"
         elif [ -n "${FIND3}" ]; then
-            FIND4=$(echo "${EXIM_ROUTERS}" | ${EGREPBINARY} '^hub_user_smarthost')
+            FIND4=$(echo "${EXIM_ROUTERS}" | ${GREPBINARY} -E '^hub_user_smarthost')
             if [ -n "${FIND4}" ]; then
                 EXIM_TYPE="SATELLITE"
             else
@@ -415,7 +415,7 @@
     Register --test-no MAIL-8920 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check OpenSMTPD status"
     if [ ${SKIPTEST} -eq 0  ]; then
         LogText "Test: check smtpd status"
-        FIND=$(${PSBINARY} ax | ${EGREPBINARY} "(/smtpd|smtpd: \[priv\]|smtpd: smtp)" | ${GREPBINARY} -v "grep")
+        FIND=$(${PSBINARY} ax | ${GREPBINARY} -E "(/smtpd|smtpd: \[priv\]|smtpd: smtp)" | ${GREPBINARY} -v "grep")
         if [ ! "${FIND}" = "" ]; then
             LogText "Result: found running smtpd process"
             Display --indent 2 --text "- OpenSMTPD status" --result "${STATUS_RUNNING}" --color GREEN
diff --git a/include/tests_nameservices b/include/tests_nameservices
index 8c483d08..c35b4171 100644
--- a/include/tests_nameservices
+++ b/include/tests_nameservices
@@ -339,7 +339,7 @@
     Register --test-no NAME-4210 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check DNS banner"
     if [ ${SKIPTEST} -eq 0 ]; then
         LogText "Test: Trying to determine version from banner"
-        FIND=$(${DIGBINARY} @localhost version.bind chaos txt | ${GREPBINARY} "^version.bind" | ${GREPBINARY} TXT | ${EGREPBINARY} "[0-9].[0-9].[0-9]*")
+        FIND=$(${DIGBINARY} @localhost version.bind chaos txt | ${GREPBINARY} "^version.bind" | ${GREPBINARY} TXT | ${GREPBINARY} -E "[0-9].[0-9].[0-9]*")
         if [ "${FIND}" = "" ]; then
             LogText "Result: no useful information in banner found"
             Display --indent 4 --text "- Checking BIND version in banner" --result "${STATUS_OK}" --color GREEN
@@ -571,7 +571,7 @@
     Register --test-no NAME-4402 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check duplicate line in /etc/hosts"
     if [ ${SKIPTEST} -eq 0 ]; then
         LogText "Test: check duplicate line in ${ROOTDIR}etc/hosts"
-        OUTPUT=$(${AWKBINARY} '{ print $1, $2 }' ${ROOTDIR}etc/hosts | ${EGREPBINARY} -v '^(#|$)' | ${EGREPBINARY} "[a-f0-9]" | ${SORTBINARY} | ${UNIQBINARY} -d)
+        OUTPUT=$(${AWKBINARY} '{ print $1, $2 }' ${ROOTDIR}etc/hosts | ${GREPBINARY} -E -v '^(#|$)' | ${GREPBINARY} -E "[a-f0-9]" | ${SORTBINARY} | ${UNIQBINARY} -d)
         if [ -z "${OUTPUT}" ]; then
             LogText "Result: OK, no duplicate lines found"
             Display --indent 4 --text "- Duplicate entries in hosts file" --result "${STATUS_NONE}" --color GREEN
@@ -592,7 +592,7 @@
     if [ ${SKIPTEST} -eq 0 ]; then
         LogText "Test: Check /etc/hosts contains an entry for this server name"
         if [ -n "${HOSTNAME}" ]; then
-            DATA=$(${EGREPBINARY} -v '^(#|$|^::1\s|localhost)' ${ROOTDIR}etc/hosts | ${GREPBINARY} -i ${HOSTNAME})
+            DATA=$(${GREPBINARY} -E -v '^(#|$|^::1\s|localhost)' ${ROOTDIR}etc/hosts | ${GREPBINARY} -i ${HOSTNAME})
             if [ -n "${DATA}" ]; then
                 LogText "Result: Found entry for ${HOSTNAME} in ${ROOTDIR}etc/hosts"
                 Display --indent 4 --text "- Presence of configured hostname in /etc/hosts" --result "${STATUS_FOUND}" --color GREEN
@@ -615,7 +615,7 @@
     Register --test-no NAME-4406 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check server hostname mapping"
     if [ ${SKIPTEST} -eq 0 ]; then
         LogText "Test: Check server hostname not locally mapped in ${ROOTDIR}etc/hosts"
-        DATA=$(${EGREPBINARY} -v '^(#|$)' ${ROOTDIR}etc/hosts | ${EGREPBINARY} '^(localhost|::1)\s' | ${GREPBINARY} -w ${HOSTNAME})
+        DATA=$(${GREPBINARY} -E -v '^(#|$)' ${ROOTDIR}etc/hosts | ${GREPBINARY} -E '^(localhost|::1)\s' | ${GREPBINARY} -w ${HOSTNAME})
         if [ -n "${DATA}" ]; then
             LogText "Result: Found this server hostname mapped to a local address"
             LogText "Output: ${DATA}"
diff --git a/include/tests_networking b/include/tests_networking
index 7faf7125..116f3760 100644
--- a/include/tests_networking
+++ b/include/tests_networking
@@ -280,7 +280,7 @@
     Register --test-no NETW-3001 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Find default gateway (route)"
     if [ $SKIPTEST -eq 0 ]; then
         LogText "Test: Searching default gateway(s)"
-        FIND=$(${NETSTATBINARY} -rn | ${EGREPBINARY} "^0.0.0.0|default" | ${TRBINARY} -s ' ' | ${CUTBINARY} -d ' ' -f2)
+        FIND=$(${NETSTATBINARY} -rn | ${GREPBINARY} -E "^0.0.0.0|default" | ${TRBINARY} -s ' ' | ${CUTBINARY} -d ' ' -f2)
         if [ -n "${FIND}" ]; then
             for I in ${FIND}; do
                 LogText "Result: Found default gateway ${I}"
diff --git a/include/tests_php b/include/tests_php
index 23738198..858bc14b 100644
--- a/include/tests_php
+++ b/include/tests_php
@@ -285,9 +285,9 @@
     # Test        : PHP-2368
     # Description : Check php register_globals option
     # Notes       : Don't test for it if PHP version is 5.4.0 or later (it has been removed)
-    if [ -n "${PHPINIFILE}" -a -n "${PHPVERSION}" -a -n "${EGREPBINARY}" ]; then
+    if [ -n "${PHPINIFILE}" -a -n "${PHPVERSION}" -a -n "${GREPBINARY} -E" ]; then
         if [ -f "${PHPINIFILE}" ]; then
-            FIND=$(echo ${PHPVERSION} | ${EGREPBINARY} "^(4.|5.[0-3])")
+            FIND=$(echo ${PHPVERSION} | ${GREPBINARY} -E "^(4.|5.[0-3])")
             if [ -z "${FIND}" ]; then
                 PREQS_MET="NO"; Debug "Found most likely PHP version 5.4.0 or higher (${PHPVERSION}) which does not use register_globals"
             else
@@ -305,7 +305,7 @@
     Register --test-no PHP-2368 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check PHP register_globals option"
     if [ ${SKIPTEST} -eq 0 ]; then
         LogText "Test: Checking PHP register_globals option"
-        FIND=$(${EGREPBINARY} -i 'register_globals.*(on|yes|1)' ${PHPINIFILE} | ${GREPBINARY} -v '^;')
+        FIND=$(${GREPBINARY} -E -i 'register_globals.*(on|yes|1)' ${PHPINIFILE} | ${GREPBINARY} -v '^;')
         if [ -n "${FIND}" ]; then
             Display --indent 4 --text "- Checking register_globals option" --result "${STATUS_WARNING}" --color RED
             ReportWarning "${TEST_NO}" "PHP option register_globals option is turned on, which can be a risk for variable value overwriting"
@@ -338,7 +338,7 @@
                     ;;
             esac
             LogText "Test: Checking file ${FILE}"
-            FIND=$(${EGREPBINARY} -i 'expose_php.*(on|yes|1)' ${FILE} | ${GREPBINARY} -v '^;')
+            FIND=$(${GREPBINARY} -E -i 'expose_php.*(on|yes|1)' ${FILE} | ${GREPBINARY} -v '^;')
             if HasData "${FIND}"; then
                 LogText "Result: found a a possible match on expose_php setting"
                 LogText "Data: ${FIND}"
@@ -367,7 +367,7 @@
     Register --test-no PHP-2374 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check PHP enable_dl option"
     if [ ${SKIPTEST} -eq 0 ]; then
         LogText "Test: Checking PHP enable_dl option"
-        FIND=$(${EGREPBINARY} -i 'enable_dl.*(on|yes|1)' ${PHPINIFILE} | ${GREPBINARY} -v '^;')
+        FIND=$(${GREPBINARY} -E -i 'enable_dl.*(on|yes|1)' ${PHPINIFILE} | ${GREPBINARY} -v '^;')
         if [ -n "${FIND}" ]; then
             Display --indent 4 --text "- Checking enable_dl option" --result "${STATUS_ON}" --color YELLOW
             Report "Result: enable_dl option is turned on, which can be used to enable more modules dynamically and circumventing security controls"
@@ -389,7 +389,7 @@
     Register --test-no PHP-2376 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check PHP allow_url_fopen option"
     if [ ${SKIPTEST} -eq 0 ]; then
         LogText "Test: Checking PHP allow_url_fopen option"
-        FIND=$(${EGREPBINARY} -i 'allow_url_fopen.*(off|no|0)' ${PHPINIFILE} | ${GREPBINARY} -v '^;')
+        FIND=$(${GREPBINARY} -E -i 'allow_url_fopen.*(off|no|0)' ${PHPINIFILE} | ${GREPBINARY} -v '^;')
         if [ -z "${FIND}" ]; then
             Display --indent 4 --text "- Checking allow_url_fopen option" --result "${STATUS_ON}" --color YELLOW
             LogText "Result: allow_url_fopen option is turned on, which can be used for downloads via PHP and is a security risk"
@@ -412,7 +412,7 @@
     Register --test-no PHP-2378 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check PHP allow_url_include option"
     if [ ${SKIPTEST} -eq 0 ]; then
         LogText "Test: Checking PHP allow_url_include option"
-        FIND=$(${EGREPBINARY} -i 'allow_url_include.*(off|no|0)' ${PHPINIFILE} | ${GREPBINARY} -v '^;')
+        FIND=$(${GREPBINARY} -E -i 'allow_url_include.*(off|no|0)' ${PHPINIFILE} | ${GREPBINARY} -v '^;')
         if [ -z "${FIND}" ]; then
             Display --indent 4 --text "- Checking allow_url_include option" --result "${STATUS_ON}" --color YELLOW
             Report "Result: allow_url_include option is turned on, which can be used for downloads via PHP and is a risk"
@@ -436,7 +436,7 @@
     #if [ ${SKIPTEST} -eq 0 ]; then
     #    FOUND=0
     #    SIMULATION=0
-    #    MAJOR_VERSION=$(echo ${PHPVERSION} | ${EGREPBINARY} "^7")
+    #    MAJOR_VERSION=$(echo ${PHPVERSION} | ${GREPBINARY} -E "^7")
     #    if [ "${OS}" = "OpenBSD" ]; then
     #        FOUND=1                    # On OpenBSD, Suhosin is hard linked into PHP
     #        SIMULATION=off
@@ -519,7 +519,7 @@
                     ;;
             esac
             LogText "Test: Checking file ${FILE}"
-            FIND=$(${EGREPBINARY} -i "^listen = [0-9]{1,5}$" ${FILE})
+            FIND=$(${GREPBINARY} -E -i "^listen = [0-9]{1,5}$" ${FILE})
             if HasData "${FIND}"; then
                 LogText "Result: found listen on just a port number"
                 LogText "Data: ${FIND}"
diff --git a/include/tests_ports_packages b/include/tests_ports_packages
index 9ca1948d..0e938cfe 100644
--- a/include/tests_ports_packages
+++ b/include/tests_ports_packages
@@ -836,7 +836,7 @@
     Register --test-no PKGS-7383 --preqs-met ${PREQS_MET} --os Linux --weight M --network NO --category security --description "Check for YUM package update management"
     if [ ${SKIPTEST} -eq 0 ]; then
         LogText "Test: YUM package update management"
-        FIND=$(${YUMBINARY} repolist 2>/dev/null | ${GREPBINARY} repolist | ${SEDBINARY} 's/[[:blank:]]//g' | ${SEDBINARY} 's/[,.]//g' | ${AWKBINARY} -F ":" '{print $2}' | ${EGREPBINARY} "^[0-9]+$")
+        FIND=$(${YUMBINARY} repolist 2>/dev/null | ${GREPBINARY} repolist | ${SEDBINARY} 's/[[:blank:]]//g' | ${SEDBINARY} 's/[,.]//g' | ${AWKBINARY} -F ":" '{print $2}' | ${GREPBINARY} -E "^[0-9]+$")
         if [ -z "${FIND}" -o "${FIND}" = "0" ]; then
             LogText "Result: YUM package update management failed"
             Display --indent 2 --text "- YUM package management consistency" --result "${STATUS_WARNING}" --color RED
@@ -1030,7 +1030,7 @@
         if [ ${OPTION_DEBIAN_SKIP_SECURITY_REPOSITORY} -eq 0 ]; then
             if [ -f ${ROOTDIR}etc/apt/sources.list ]; then
                 LogText "Searching for security.debian.org/security.ubuntu.com or security repositories in /etc/apt/sources.list file"
-                FIND=$(${EGREPBINARY} "security.debian.org|security.ubuntu.com|security/? " ${ROOTDIR}etc/apt/sources.list | ${GREPBINARY} -v '#' | ${SEDBINARY} 's/ /!space!/g')
+                FIND=$(${GREPBINARY} -E "security.debian.org|security.ubuntu.com|security/? " ${ROOTDIR}etc/apt/sources.list | ${GREPBINARY} -v '#' | ${SEDBINARY} 's/ /!space!/g')
                 if [ -n "${FIND}" ]; then
                     FOUND=1
                     Display --indent 2 --text "- Checking security repository in sources.list file" --result "${STATUS_OK}" --color GREEN
@@ -1043,7 +1043,7 @@
             fi
             if [ -d /etc/apt/sources.list.d ]; then
                 LogText "Searching for security.debian.org/security.ubuntu.com or security repositories in /etc/apt/sources.list.d directory"
-                FIND=$(${EGREPBINARY} -r "security.debian.org|security.ubuntu.com|security/? " /etc/apt/sources.list.d | ${GREPBINARY} -v '#' | ${SEDBINARY} 's/ /!space!/g')
+                FIND=$(${GREPBINARY} -E -r "security.debian.org|security.ubuntu.com|security/? " /etc/apt/sources.list.d | ${GREPBINARY} -v '#' | ${SEDBINARY} 's/ /!space!/g')
                 if [ -n "${FIND}" ]; then
                     FOUND=1
                     Display --indent 2 --text "- Checking security repository in sources.list.d directory" --result "${STATUS_OK}" --color GREEN
@@ -1338,7 +1338,7 @@
         if [ "${DPKGBINARY}" ]; then
             TESTED=1
             KERNEL_PKG_NAMES="linux-image-[0-9]|raspberrypi-kernel|pve-kernel-[0-9]"
-            KERNELS=$(${DPKGBINARY} -l 2> /dev/null | ${EGREPBINARY} "${KERNEL_PKG_NAMES}" | ${WCBINARY} -l)
+            KERNELS=$(${DPKGBINARY} -l 2> /dev/null | ${GREPBINARY} -E "${KERNEL_PKG_NAMES}" | ${WCBINARY} -l)
             if [ ${KERNELS} -eq 0 ]; then
                 LogText "Result: found no kernels from dpkg -l output, which is unexpected"
             elif [ ${KERNELS} -gt 5 ]; then
diff --git a/include/tests_printers_spoolers b/include/tests_printers_spoolers
index 851b0edd..d9318c3b 100644
--- a/include/tests_printers_spoolers
+++ b/include/tests_printers_spoolers
@@ -144,14 +144,14 @@
         LogText "Test: Checking CUPS daemon listening network addresses"
 
         # Search for Port statement
-        FIND=$(${EGREPBINARY} "^Port 631" ${CUPSD_CONFIG_FILE})
+        FIND=$(${GREPBINARY} -E "^Port 631" ${CUPSD_CONFIG_FILE})
         if [ -n "${FIND}" ]; then
             LogText "Result: found CUPS listening on port 631 (most likely all interfaces)"
             PORT_FOUND=1
         fi
 
         # Checking network addresses
-        FIND=$(${EGREPBINARY} "^(SSL)?Listen" ${CUPSD_CONFIG_FILE} | ${GREPBINARY} -v "/" | ${AWKBINARY} '{ print $2 }')
+        FIND=$(${GREPBINARY} -E "^(SSL)?Listen" ${CUPSD_CONFIG_FILE} | ${GREPBINARY} -v "/" | ${AWKBINARY} '{ print $2 }')
         COUNT=0
         for ITEM in ${FIND}; do
             LogText "Result: found network address: ${ITEM}"
@@ -222,7 +222,7 @@
         QDAEMON_CONFIG_FILE="${ROOTDIR}etc/qconfig"
         FileIsReadable ${QDAEMON_CONFIG_FILE}
         if [ ${CANREAD} -eq 1 ]; then
-            FIND=$(${GREPBINARY} -v "^\*" ${QDAEMON_CONFIG_FILE} | ${EGREPBINARY} "backend|device")
+            FIND=$(${GREPBINARY} -v "^\*" ${QDAEMON_CONFIG_FILE} | ${GREPBINARY} -E "backend|device")
             if [ -n "${FIND}" ]; then
                 LogText "Result: printers are defined in ${QDAEMON_CONFIG_FILE}"
                 Display --indent 2 --text "- Checking /etc/qconfig file" --result "${STATUS_FOUND}" --color GREEN
diff --git a/include/tests_scheduling b/include/tests_scheduling
index 3aa004c6..10fa0766 100644
--- a/include/tests_scheduling
+++ b/include/tests_scheduling
@@ -35,7 +35,7 @@
     # Description : Check cron daemon
     Register --test-no SCHD-7702 --weight L --network NO --category security --description "Check status of cron daemon"
     if [ ${SKIPTEST} -eq 0 ]; then
-        FIND=$(${PSBINARY} aux | ${EGREPBINARY} "( cron$|/cron(d)? )")
+        FIND=$(${PSBINARY} aux | ${GREPBINARY} -E "( cron$|/cron(d)? )")
         if IsEmpty "${FIND}"; then
             LogText "Result: no cron daemon found"
         else
@@ -55,12 +55,12 @@
         BAD_FILE_PERMISSIONS=0
         BAD_FILE_OWNERSHIP=0
         FindCronJob() {
-            sCRONJOBS=$(${EGREPBINARY} '^([0-9*])' $1 | ${TRBINARY} '\t' ' ' | ${TRBINARY} -s ' ' | ${TRBINARY} ' ' ',' | ${SORTBINARY})
+            sCRONJOBS=$(${GREPBINARY} -E '^([0-9*])' $1 | ${TRBINARY} '\t' ' ' | ${TRBINARY} -s ' ' | ${TRBINARY} ' ' ',' | ${SORTBINARY})
         }
 
         CRONTAB_FILE="${ROOTDIR}etc/crontab"
         if [ -f ${CRONTAB_FILE} ]; then
-            ${EGREPBINARY} -q -s 'lynis audit system' ${CRONTAB_FILE} && LYNIS_CRONJOB="file:/etc/crontab"
+            ${GREPBINARY} -E -q -s 'lynis audit system' ${CRONTAB_FILE} && LYNIS_CRONJOB="file:/etc/crontab"
             if IsWorldWritable ${CRONTAB_FILE}; then LogText "Result: insecure file permissions for cronjob file ${CRONTAB_FILE}"; Report "insecure_fileperms_cronjob[]=${CRONTAB_FILE}"; BAD_FILE_PERMISSIONS=1; AddHP 0 5; fi
             if ! IsOwnedByRoot ${CRONTAB_FILE}; then LogText "Result: incorrect owner found for cronjob file ${CRONTAB_FILE}"; Report "bad_fileowner_cronjob[]=${CRONTAB_FILE}"; BAD_FILE_OWNERSHIP=1; AddHP 0 5; fi
             FindCronJob ${CRONTAB_FILE}
@@ -86,7 +86,7 @@
                             if IsWorldWritable ${FILE}; then LogText "Result: insecure file permissions for cronjob file ${J}"; Report "insecure_fileperms_cronjob[]=${J}"; BAD_FILE_PERMISSIONS=1; AddHP 0 5; fi
                             if ! IsOwnedByRoot ${FILE}; then LogText "Result: incorrect owner found for cronjob file ${J}"; Report "bad_fileowner_cronjob[]=${J}"; BAD_FILE_OWNERSHIP=1; AddHP 0 5; fi
                             FILENAME=$(echo ${FILE} | ${AWKBINARY} -F/ '{print $NF}')
-                            if [ "${FILENAME}" = "lynis" ]; then ${EGREPBINARY} -q -s 'lynis audit system' ${CRONTAB_FILE} && LYNIS_CRONJOB="file:${FILE}"; fi
+                            if [ "${FILENAME}" = "lynis" ]; then ${GREPBINARY} -E -q -s 'lynis audit system' ${CRONTAB_FILE} && LYNIS_CRONJOB="file:${FILE}"; fi
                             FindCronJob ${FILE}
                             if HasData "${sCRONJOBS}"; then
                                 for K in ${sCRONJOBS}; do
@@ -121,7 +121,7 @@
                             if IsWorldWritable ${FILE}; then LogText "Result: insecure file permissions for cronjob file ${FILE}"; Report "insecure_fileperms_cronjob[]=${FILE}"; BAD_FILE_PERMISSIONS=1; AddHP 0 5; fi
                             if ! IsOwnedByRoot ${FILE}; then LogText "Result: incorrect owner found for cronjob file ${FILE}"; Report "bad_fileowner_cronjob[]=${FILE}"; BAD_FILE_OWNERSHIP=1; AddHP 0 5; fi
                             FILENAME=$(echo ${FILE} | ${AWKBINARY} -F/ '{print $NF}')
-                            if [ "${FILENAME}" = "lynis" ]; then ${EGREPBINARY} -q -s 'lynis audit system' ${CRONTAB_FILE} && LYNIS_CRONJOB="file:${FILE}"; fi
+                            if [ "${FILENAME}" = "lynis" ]; then ${GREPBINARY} -E -q -s 'lynis audit system' ${CRONTAB_FILE} && LYNIS_CRONJOB="file:${FILE}"; fi
                             LogText "Result: Found cronjob (${I}): ${FILE}"
                             Report "cronjob[]=${FILE}"
                         done
@@ -141,7 +141,7 @@
             FIND=$(${FINDBINARY} /var/spool/cron/crontabs -xdev -type f -print 2> /dev/null)
             for I in ${FIND}; do
                 if FileIsReadable ${I}; then
-                    ${EGREPBINARY} -q -s 'lynis audit system' ${I} && LYNIS_CRONJOB="file:${I}"
+                    ${GREPBINARY} -E -q -s 'lynis audit system' ${I} && LYNIS_CRONJOB="file:${I}"
                     FindCronJob ${I}
                     for FILE in ${sCRONJOBS}; do
                         LogText "Found cronjob (/var/spool/cron/crontabs): ${I} (${FILE})"
@@ -154,7 +154,7 @@
                 FIND=$(find ${ROOTDIR}var/spool/cron -type f -print)
                 for I in ${FIND}; do
                     if FileIsReadable ${I}; then
-                        ${EGREPBINARY} -q -s 'lynis audit system' ${I} && LYNIS_CRONJOB="file:${I}"
+                        ${GREPBINARY} -E -q -s 'lynis audit system' ${I} && LYNIS_CRONJOB="file:${I}"
                         FindCronJob ${I}
                         for FILE in ${sCRONJOBS}; do
                             LogText "Found cronjob in ${ROOTDIR}var/spool/cron: ${I} (${FILE})"
@@ -169,7 +169,7 @@
         if [ "${OS}" = "Linux" ]; then
             if [ -f /etc/anacrontab ]; then
                 LogText "Test: checking anacrontab"
-                sANACRONJOBS=$(${EGREPBINARY} '^([0-9@])' /etc/anacrontab | ${TRBINARY} '\t' ' ' | ${TRBINARY} -s ' ' | ${TRBINARY} ' ' ',' | ${SORTBINARY})
+                sANACRONJOBS=$(${GREPBINARY} -E '^([0-9@])' /etc/anacrontab | ${TRBINARY} '\t' ' ' | ${TRBINARY} -s ' ' | ${TRBINARY} ' ' ',' | ${SORTBINARY})
                 if [ -n "${sANACRONJOBS}" ]; then
                     Report "scheduler[]=anacron"
                     for I in ${sANACRONJOBS}; do
diff --git a/include/tests_shells b/include/tests_shells
index 8ecbde2c..b046b608 100644
--- a/include/tests_shells
+++ b/include/tests_shells
@@ -52,7 +52,7 @@
     Register --test-no SHLL-6202 --os FreeBSD --weight L --network NO --category security --description "Check console TTYs"
     if [ ${SKIPTEST} -eq 0 ]; then
         LogText "Test: Checking console TTYs"
-        FIND=$(${EGREPBINARY} '^console' ${ROOTDIR}etc/ttys | ${GREPBINARY} -v 'insecure')
+        FIND=$(${GREPBINARY} -E '^console' ${ROOTDIR}etc/ttys | ${GREPBINARY} -v 'insecure')
         if [ -z "${FIND}" ]; then
             Display --indent 2 --text "- Checking console TTYs" --result "${STATUS_OK}" --color GREEN
             LogText "Result: console is secured against single user mode without password."
diff --git a/include/tests_squid b/include/tests_squid
index c486108c..1eb43955 100644
--- a/include/tests_squid
+++ b/include/tests_squid
@@ -42,7 +42,7 @@
         LogText "Test: Searching for a Squid daemon"
         FOUND=0
         # Check running processes
-        FIND=$(${PSBINARY} ax | ${EGREPBINARY} "(squid|squid3) " | ${GREPBINARY} -v "grep")
+        FIND=$(${PSBINARY} ax | ${GREPBINARY} -E "(squid|squid3) " | ${GREPBINARY} -v "grep")
         if [ -n "${FIND}" ]; then
             SQUID_DAEMON_RUNNING=1
             LogText "Result: Squid daemon is running"
diff --git a/include/tests_ssh b/include/tests_ssh
index fb784d83..6ab6f193 100644
--- a/include/tests_ssh
+++ b/include/tests_ssh
@@ -299,7 +299,7 @@
     if [ ${SKIPTEST} -eq 0 ]; then
         FOUND=0
         # AllowUsers
-        FIND=$(${EGREPBINARY} -i "^AllowUsers" ${SSH_DAEMON_OPTIONS_FILE} | ${AWKBINARY} '{ print $2 }')
+        FIND=$(${GREPBINARY} -E -i "^AllowUsers" ${SSH_DAEMON_OPTIONS_FILE} | ${AWKBINARY} '{ print $2 }')
         if [ -n "${FIND}" ]; then
             LogText "Result: AllowUsers set, with value ${FIND}"
             Display --indent 4 --text "- OpenSSH option: AllowUsers" --result "${STATUS_FOUND}" --color GREEN
@@ -310,7 +310,7 @@
         fi
 
         # AllowGroups
-        FIND=$(${EGREPBINARY} -i "^AllowGroups" ${SSH_DAEMON_OPTIONS_FILE} | ${AWKBINARY} '{ print $2 }')
+        FIND=$(${GREPBINARY} -E -i "^AllowGroups" ${SSH_DAEMON_OPTIONS_FILE} | ${AWKBINARY} '{ print $2 }')
         if [ -n "${FIND}" ]; then
             LogText "Result: AllowUsers set ${FIND}"
             Display --indent 4 --text "- OpenSSH option: AllowGroups" --result "${STATUS_FOUND}" --color GREEN
diff --git a/include/tests_storage b/include/tests_storage
index ac60502c..29785e6c 100644
--- a/include/tests_storage
+++ b/include/tests_storage
@@ -38,8 +38,8 @@
         if [ -d "${ROOTDIR}etc/modprobe.d" ]; then
             FIND=$(${LSBINARY} ${ROOTDIR}etc/modprobe.d/* 2> /dev/null)
             if [ -n "${FIND}" ]; then
-                FIND1=$(${EGREPBINARY} "blacklist (ohci1394|firewire[-_]ohci|firewire-core)" ${ROOTDIR}etc/modprobe.d/* | ${GREPBINARY} -v "#")
-                FIND2=$(${EGREPBINARY} "install (ohci1394|firewire[-_]ohci|firewire-core) /bin/(false|true)" ${ROOTDIR}etc/modprobe.d/* | ${GREPBINARY} -v "#")
+                FIND1=$(${GREPBINARY} -E "blacklist (ohci1394|firewire[-_]ohci|firewire-core)" ${ROOTDIR}etc/modprobe.d/* | ${GREPBINARY} -v "#")
+                FIND2=$(${GREPBINARY} -E "install (ohci1394|firewire[-_]ohci|firewire-core) /bin/(false|true)" ${ROOTDIR}etc/modprobe.d/* | ${GREPBINARY} -v "#")
                 if [ -n "${FIND1}" ] || [ -n "${FIND2}" ]; then
                     FOUND=1
                     LogText "Result: found firewire ohci driver in disabled state"
@@ -49,8 +49,8 @@
             fi
         fi
         if [ -f "${ROOTDIR}etc/modprobe.conf" ]; then
-            FIND1=$(${EGREPBINARY} -r "blacklist (ohci1394|firewire[-_]ohci|firewire-core)" "${ROOTDIR}etc/modprobe.conf" | ${GREPBINARY} -v "#")
-            FIND2=$(${EGREPBINARY} -r "install (ohci1394|firewire[-_]ohci|firewire-core) /bin/(false|true)" "${ROOTDIR}etc/modprobe.conf" | ${GREPBINARY} -v "#")
+            FIND1=$(${GREPBINARY} -E -r "blacklist (ohci1394|firewire[-_]ohci|firewire-core)" "${ROOTDIR}etc/modprobe.conf" | ${GREPBINARY} -v "#")
+            FIND2=$(${GREPBINARY} -E -r "install (ohci1394|firewire[-_]ohci|firewire-core) /bin/(false|true)" "${ROOTDIR}etc/modprobe.conf" | ${GREPBINARY} -v "#")
             if [ -n "${FIND1}" ] || [ -n "${FIND2}" ]; then
                 FOUND=1
                 LogText "Result: found firewire ohci driver in disabled state"
diff --git a/include/tests_time b/include/tests_time
index df9a86b7..7ff6755e 100644
--- a/include/tests_time
+++ b/include/tests_time
@@ -139,7 +139,7 @@
         for I in ${CRONTAB_FILES}; do
             if [ -f ${I} ]; then
                 LogText "Test: checking for ntpdate, rdate, sntp or ntpdig in crontab file ${I}"
-                FIND=$(${EGREPBINARY} "${CRONTAB_REGEX}" ${I} | ${GREPBINARY} -v '^#')
+                FIND=$(${GREPBINARY} -E "${CRONTAB_REGEX}" ${I} | ${GREPBINARY} -v '^#')
                 if [ -n "${FIND}" ]; then
                     FOUND=1; NTP_CONFIG_TYPE_SCHEDULED=1
                     Display --indent 2 --text "- Checking NTP client in crontab file (${I})" --result "${STATUS_FOUND}" --color GREEN
@@ -161,10 +161,10 @@
         for I in ${CRON_DIRS}; do
             for J in "${I}"/*; do  # iterate over folders in a safe way
                 # Check: regular file, readable and not called .placeholder
-                FIND=$(echo "${J}" | ${EGREPBINARY} '/.placeholder$')
+                FIND=$(echo "${J}" | ${GREPBINARY} -E '/.placeholder$')
                 if [ -f "${J}" ] && [ -r "${J}" ] && [ -z "${FIND}" ]; then
                     LogText "Test: checking for ntpdate, rdate, sntp or ntpdig in ${J}"
-                    FIND=$("${EGREPBINARY}" "${CRONTAB_REGEX}" "${J}" | "${GREPBINARY}" -v "^#")
+                    FIND=$("${GREPBINARY} -E" "${CRONTAB_REGEX}" "${J}" | "${GREPBINARY}" -v "^#")
                     if [ -n "${FIND}" ]; then
                         FOUND=1; FOUND_IN_CRON=1; NTP_CONFIG_TYPE_SCHEDULED=1
                         LogText "Result: found ntpdate, rdate, sntp or ntpdig in ${J}"
@@ -232,7 +232,7 @@
     Register --test-no TIME-3106 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check systemd NTP time synchronization status"
     if [ ${SKIPTEST} -eq 0 ]; then
         LogText "Test: Check the status of time synchronization via timedatectl"
-        FIND=$(${TIMEDATECTL} status | ${EGREPBINARY} "(NTP|System clock) synchronized: yes")
+        FIND=$(${TIMEDATECTL} status | ${GREPBINARY} -E "(NTP|System clock) synchronized: yes")
         if [ -z "${FIND}" ]; then
             LogText "Result: time not synchronized via NTP"
             ReportSuggestion "${TEST_NO}" "Check timedatectl output. Synchronization via NTP is enabled, but status reflects it is not synchronized"
@@ -273,7 +273,7 @@
         else
             for ITEM in ${FIND}; do
                 LogText "Found stratum 16 peer: ${ITEM}"
-                FIND2=$(${EGREPBINARY} "^ntp-ignore-stratum-16-peer=${ITEM}" ${PROFILE})
+                FIND2=$(${GREPBINARY} -E "^ntp-ignore-stratum-16-peer=${ITEM}" ${PROFILE})
                 if IsEmpty "${FIND2}"; then
                     COUNT=$((COUNT + 1))
                     Report "ntp_stratum_16_peer[]=${ITEM}"
@@ -303,7 +303,7 @@
     Register --test-no TIME-3120 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check unreliable NTP peers"
     if [ ${SKIPTEST} -eq 0 ]; then
         LogText "Test: Checking unreliable ntp peers"
-        FIND=$(${NTPQBINARY} -p -n | ${EGREPBINARY} "^(-|#)" | ${AWKBINARY} '{ print $1 }' | ${SEDBINARY} 's/^-//g')
+        FIND=$(${NTPQBINARY} -p -n | ${GREPBINARY} -E "^(-|#)" | ${AWKBINARY} '{ print $1 }' | ${SEDBINARY} 's/^-//g')
         if [ -z "${FIND}" ]; then
             Display --indent 2 --text "- Checking unreliable ntp peers" --result "${STATUS_NONE}" --color GREEN
             LogText "Result: No unreliable peers found"
@@ -371,7 +371,7 @@
     Register --test-no TIME-3132 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check NTP falsetickers"
     if [ ${SKIPTEST} -eq 0 ]; then
         LogText "Test: Checking preferred time source"
-        FIND=$(${NTPQBINARY} -p -n | ${EGREPBINARY} '^x')
+        FIND=$(${NTPQBINARY} -p -n | ${GREPBINARY} -E '^x')
         if [ -z "${FIND}" ]; then
             Display --indent 2 --text "- Checking falsetickers" --result "${STATUS_OK}" --color GREEN
             LogText "Result: No falsetickers found (items preceding with an 'x')"
@@ -455,7 +455,7 @@
         else
             LogText "Result: ${FILE} is not empty, which is fine"
             Display --indent 2 --text "- Checking NTP step-tickers file" --result "${STATUS_OK}" --color GREEN
-            sFIND=$(${AWKBINARY} '/^[a-z0-9]/ { print $1 }' ${FILE} | ${EGREPBINARY} -v "^127." | ${EGREPBINARY} -v "^::1")
+            sFIND=$(${AWKBINARY} '/^[a-z0-9]/ { print $1 }' ${FILE} | ${GREPBINARY} -E -v "^127." | ${GREPBINARY} -E -v "^::1")
             for I in ${sFIND}; do
                 FIND=$(${GREPBINARY} ^${I} ${FILE} | wc -l)
                 if [ ${FIND} -gt 0 ]; then
@@ -553,7 +553,7 @@
     Register --test-no TIME-3182 --preqs-met "${PREQS_MET}" --weight L --network NO --category security --description "Check OpenNTPD has working peers"
     if [ ${SKIPTEST} -eq 0 ]; then
         # Format is "xx/yy peers valid, ..."
-        FIND=$(${NTPCTLBINARY} -s status | ${EGREPBINARY} -o '[0-9]+/[0-9]+' | ${CUTBINARY} -d '/' -f 1)
+        FIND=$(${NTPCTLBINARY} -s status | ${GREPBINARY} -E -o '[0-9]+/[0-9]+' | ${CUTBINARY} -d '/' -f 1)
         if [ -z "${FIND}" ] || [ "${FIND}" -eq 0 ]; then
             ReportWarning "${TEST_NO}" "OpenNTPD has no peers" "${NTPCTLBINARY} -s status"
         fi
diff --git a/include/tests_tooling b/include/tests_tooling
index 083f5045..30c506c0 100644
--- a/include/tests_tooling
+++ b/include/tests_tooling
@@ -259,8 +259,8 @@
     #            # Check email alert configuration
     #            LogText "Test: checking for email actions within ${FAIL2BAN_CONFIG}"
     #
-    #            FIND=$(${EGREPBINARY} "^action = \%\(action_m.*\)s" ${FAIL2BAN_CONFIG})
-    #            FIND2=$(${EGREPBINARY} "^action = \%\(action_\)s" ${FAIL2BAN_CONFIG})
+    #            FIND=$(${GREPBINARY} -E "^action = \%\(action_m.*\)s" ${FAIL2BAN_CONFIG})
+    #            FIND2=$(${GREPBINARY} -E "^action = \%\(action_\)s" ${FAIL2BAN_CONFIG})
     #
     #            if [ -n "${FIND}" ]; then
     #                FAIL2BAN_EMAIL=1
diff --git a/include/tests_usb b/include/tests_usb
index d99d5a66..81c184df 100644
--- a/include/tests_usb
+++ b/include/tests_usb
@@ -54,8 +54,8 @@
         if [ -d /etc/modprobe.d ]; then
             FIND=$(${LSBINARY} ${ROOTDIR}etc/modprobe.d/* 2> /dev/null)
             if [ -n "${FIND}" ]; then
-                FIND=$(${EGREPBINARY} -r "install usb[-_]storage /bin/(false|true)" ${ROOTDIR}etc/modprobe.d/* | ${GREPBINARY} -v "#")
-                FIND2=$(${EGREPBINARY} -r "^blacklist usb[-_]storage" ${ROOTDIR}etc/modprobe.d/*)
+                FIND=$(${GREPBINARY} -E -r "install usb[-_]storage /bin/(false|true)" ${ROOTDIR}etc/modprobe.d/* | ${GREPBINARY} -v "#")
+                FIND2=$(${GREPBINARY} -E -r "^blacklist usb[-_]storage" ${ROOTDIR}etc/modprobe.d/*)
                 if [ -n "${FIND}" -o -n "${FIND2}" ]; then
                     FOUND=1
                     LogText "Result: found usb-storage driver in disabled state (blacklisted)"
@@ -65,7 +65,7 @@
             fi
         fi
         if [ -f ${ROOTDIR}etc/modprobe.conf ]; then
-            FIND=$(${EGREPBINARY} "install usb[-_]storage /bin/(false|true)" ${ROOTDIR}etc/modprobe.conf | ${GREPBINARY} "usb-storage" | ${GREPBINARY} -v "#")
+            FIND=$(${GREPBINARY} -E "install usb[-_]storage /bin/(false|true)" ${ROOTDIR}etc/modprobe.conf | ${GREPBINARY} "usb-storage" | ${GREPBINARY} -v "#")
             if [ -n "${FIND}" ]; then
                 FOUND=1
                 LogText "Result: found usb-storage driver in disabled state"
@@ -316,11 +316,11 @@
                     Display --indent 4 --text "- RuleFile" --result "${STATUS_FOUND}" --color GREEN
                     AddHP 1 1
 
-                    USBGUARD_RULES_ALLOW=$(${EGREPBINARY} -c "^allow" ${USBGUARD_RULES})
+                    USBGUARD_RULES_ALLOW=$(${GREPBINARY} -E -c "^allow" ${USBGUARD_RULES})
                     Display --indent 6 --text "- Controllers & Devices allow" --result "${USBGUARD_RULES_ALLOW}" --color WHITE
-                    USBGUARD_RULES_BLOCK=$(${EGREPBINARY} -c "^block" ${USBGUARD_RULES})
+                    USBGUARD_RULES_BLOCK=$(${GREPBINARY} -E -c "^block" ${USBGUARD_RULES})
                     Display --indent 6 --text "- Controllers & Devices block" --result "${USBGUARD_RULES_BLOCK}" --color WHITE
-                    USBGUARD_RULES_REJECT=$(${EGREPBINARY} -c "^reject" ${USBGUARD_RULES})
+                    USBGUARD_RULES_REJECT=$(${GREPBINARY} -E -c "^reject" ${USBGUARD_RULES})
                     Display --indent 6 --text "- Controllers & Devices reject" --result "${USBGUARD_RULES_REJECT}" --color WHITE
                 else
                     LogText "Result: RuleFile not found (\"man usbguard\" for instructions to install initial policies)"
diff --git a/include/tests_webservers b/include/tests_webservers
index e0ca5737..1dbde636 100644
--- a/include/tests_webservers
+++ b/include/tests_webservers
@@ -63,7 +63,7 @@
             Display --indent 2 --text "- Checking Apache" --result "${STATUS_NOT_FOUND}" --color WHITE
         else
             LogText "Test: Scanning for Apache binary"
-            IS_APACHE=$(${HTTPDBINARY} -v 2> /dev/null | ${EGREPBINARY} '[aA]pache')
+            IS_APACHE=$(${HTTPDBINARY} -v 2> /dev/null | ${GREPBINARY} -E '[aA]pache')
             if IsEmpty "${IS_APACHE}"; then
                 LogText "Result: ${HTTPDBINARY} is not Apache"
                 Display --indent 2 --text "- Checking Apache (binary ${HTTPDBINARY})" --result "NO MATCH" --color WHITE
@@ -203,7 +203,7 @@
     #if [ ${SKIPTEST} -eq 0 ]; then
     #    # Testing Debian style
     #    LogText "Test: searching loaded/enabled Apache modules"
-    #    apachectl -t -D DUMP_MODULES 2>&1 | ${EGREPBINARY} -v "(Loaded Modules|Syntax OK)" | ${SEDBINARY} 's/(\(shared\|static\))//' | ${SEDBINARY} 's/ //'
+    #    apachectl -t -D DUMP_MODULES 2>&1 | ${GREPBINARY} -E -v "(Loaded Modules|Syntax OK)" | ${SEDBINARY} 's/(\(shared\|static\))//' | ${SEDBINARY} 's/ //'
     #    for I in ${APACHE_MODULES_ENABLED_LOCS}; do
     #        LogText "Test: checking ${I}"
     #        if [ -d ${I} ]; then
@@ -381,7 +381,7 @@
         done
 
         # Sort all discovered configuration lines and store unique ones. Also strip out the mime types configured in nginx
-        SORTFILE=$(${SORTBINARY} -u ${TMPFILE} | ${SEDBINARY} 's/ /:space:/g' | ${EGREPBINARY} -v "(application|audio|image|text|video)/" | ${EGREPBINARY} -v "({|})")
+        SORTFILE=$(${SORTBINARY} -u ${TMPFILE} | ${SEDBINARY} 's/ /:space:/g' | ${GREPBINARY} -E -v "(application|audio|image|text|video)/" | ${GREPBINARY} -E -v "({|})")
         for I in ${SORTFILE}; do
             I=$(echo ${I} | ${SEDBINARY} 's/:space:/ /g')
             Report "nginx_config_option[]=${I}";

From 09c03ce222c03996b652142bb89cc541b28a3243 Mon Sep 17 00:00:00 2001
From: xnoguer <xnoguer@sigge-xnoguer.sigge.cl>
Date: Sun, 23 Apr 2023 17:40:16 -0400
Subject: [PATCH 2/7] Using grep -E

---
 lynis | 28 ++++++++++++++++++++--------
 1 file changed, 20 insertions(+), 8 deletions(-)

diff --git a/lynis b/lynis
index 3f6d3b84..5aa219b7 100755
--- a/lynis
+++ b/lynis
@@ -148,13 +148,25 @@
     # Perform a basic check for permissions. After including functions, using SafePerms()
     IGNORE_FILE_PERMISSION_ISSUES=0
 
-    FILES_TO_CHECK="consts functions"
+    FILES_TO_CHECK="consts functions parameters binaries osdetection data_upload"
 
     ISSUE=0
     ISSUE_TYPE=""
     SHOWPERMERROR=0
 
     for FILE in ${FILES_TO_CHECK}; do
+        SUGGESTED_PERMS=640
+        if [ ${PRIVILEGED} -eq 0 ]; then
+            SUGGESTED_PERMS=644
+        fi
+
+        # First check if files are readable so the shell can execute them
+        if [ ! -r ${INCLUDEDIR}/${FILE} ]; then
+            ISSUE=1
+            ISSUE_TYPE="perms"
+            echo "[!] Change file permissions of ${INCLUDEDIR}/${FILE} to ${SUGGESTED_PERMS}."; echo "    Command: chmod ${SUGGESTED_PERMS} ${INCLUDEDIR}/${FILE}"
+        fi
+
         PERMS=$(ls -l ${INCLUDEDIR}/${FILE} | cut -c 2-10)
         GROUPPERMS=$(ls -l ${INCLUDEDIR}/${FILE} | cut -c 5-7)
         GROUPOWNERID=$(ls -n ${INCLUDEDIR}/${FILE} | awk '{ print $4 }')
@@ -163,11 +175,11 @@
 
         # Check permissions of include/X file (400, 600, 640, 644)
         if [ "${PERMS}" = "rwxrwxrwx" ]; then
-            ISSUE=1; ISSUE_TYPE="perms"; echo "[!] Change file permissions of ${INCLUDEDIR}/${FILE} to 640."; echo "    Command: chmod 640 ${INCLUDEDIR}/${FILE}"
+            ISSUE=1; ISSUE_TYPE="perms"; echo "[!] Change file permissions of ${INCLUDEDIR}/${FILE} to ${SUGGESTED_PERMS}."; echo "    Command: chmod ${SUGGESTED_PERMS} ${INCLUDEDIR}/${FILE}"
         elif [ ! "${PERMS}" = "r--------" -a ! "${PERMS}" = "rw-------" -a ! "${PERMS}" = "rw-r-----" -a ! "${PERMS}" = "rw-r--r--" ]; then
             # If group ID equals user ID, we consider permissions to be fine (probably default umask)
             if [ ! "${GROUPOWNERID}" = "${OWNERID}" ]; then
-                ISSUE=1; ISSUE_TYPE="perms"; echo "[!] Change file permissions of ${INCLUDEDIR}/${FILE} to 640."; echo "    Command: chmod 640 ${INCLUDEDIR}/${FILE}"
+                ISSUE=1; ISSUE_TYPE="perms"; echo "[!] Change file permissions of ${INCLUDEDIR}/${FILE} to ${SUGGESTED_PERMS}."; echo "    Command: chmod ${SUGGESTED_PERMS} ${INCLUDEDIR}/${FILE}"
             fi
         fi
 
@@ -193,7 +205,7 @@
     if [ ${ISSUE} -eq 1 ]; then
         printf "\n[X] Security check failed\n\n    Why do I see this error?\n    -------------------------------\n    This is a protection mechanism to prevent the root user from executing user created files. The files may be altered, or including malicious pieces of script.\n\n    What can I do?\n    ---------------------\n    Option 1) Check if a trusted user created the files (e.g. due to using Git, Homebrew or similar).\n              If you trust these files, you can decide to continue this run by pressing ENTER.\n"
         if [ "${ISSUE_TYPE}" = "perms" ]; then
-            printf "\n    Option 2) Change permissions of the related files.\n\n       Commands (full directory):\n         # chmod 640 include/*\n         # ./lynis audit system"
+            printf "\n    Option 2) Change permissions of the related files.\n\n       Commands (full directory):\n         # chmod ${SUGGESTED_PERMS} include/*\n         # ./lynis audit system"
         elif [ "${ISSUE_TYPE}" = "owner" ]; then
             printf "\n    Option 2) Change ownership of the related files (or full directory).\n\n       Commands (full directory):\n         # cd ..\n         # chown -R 0:0 lynis\n         # cd lynis\n         # ./lynis audit system"
         fi
@@ -217,10 +229,10 @@
 
     # Extract the short notation of the language (first two characters).
     if [ -x "$(command -v locale 2> /dev/null)" ]; then
-        LANGUAGE=$(locale | egrep "^LANG=" | cut -d= -f2 | cut -d_ -f1 | tr -d '"' | egrep "^[a-z]{2}$")
+        LANGUAGE=$(locale | grep -E "^LANG=" | cut -d= -f2 | cut -d_ -f1 | tr -d '"' | grep -E "^[a-z]{2}$")
         # Try locale command if shell variable had no value
         if [ -z "${DISPLAY_LANG}" ]; then
-            DISPLAY_LANG=$(locale | egrep "^LANG=" | cut -d= -f2)
+            DISPLAY_LANG=$(locale | grep -E "^LANG=" | cut -d= -f2)
         fi
     else
         LANGUAGE="en"
@@ -1036,7 +1048,7 @@ ${NORMAL}
                 if SafeFile ${INCLUDE_FILE}; then
                     . ${INCLUDE_FILE}
                 else
-                    LogText "Exception: skipping test category ${INCLUDE_TEST}, file ${INCLUDE_FILE} has bad permissions (should be 640, 600 or 400)"
+                    LogText "Exception: skipping test category ${INCLUDE_TEST}, file ${INCLUDE_FILE} has bad permissions (should be 644, 640, 600 or 400)"
                     ReportWarning "NONE" "Invalid permissions on tests file tests_${INCLUDE_TEST}"
                     # Insert a section and warn user also on screen
                     InsertSection "${SECTION_GENERAL}"
@@ -1063,7 +1075,7 @@ ${NORMAL}
                 LogText "Result: file permissions fine, running custom tests"
                 . ${INCLUDEDIR}/tests_custom
             else
-                LogText "Exception: skipping custom tests, file has bad permissions (should be 640, 600 or 400)"
+                LogText "Exception: skipping custom tests, file has bad permissions (should be 644, 640, 600 or 400)"
                 ReportWarning "NONE" "Invalid permissions on custom tests file"
                 Display --indent 2 --text "- Running custom tests... " --result "${STATUS_WARNING}" --color RED
             fi

From c7b73837db1f68820befd06a63f2ab855a00d5f9 Mon Sep 17 00:00:00 2001
From: xnoguer <xnoguer@sigge-xnoguer.sigge.cl>
Date: Sun, 23 Apr 2023 17:44:44 -0400
Subject: [PATCH 3/7] Removing changes from another branch

---
 include/functions | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/include/functions b/include/functions
index 841586be..9c52044b 100644
--- a/include/functions
+++ b/include/functions
@@ -3103,11 +3103,6 @@
                     unsafe=1
                     LogText "Security alert: file is not owned by active user, but can write to it"
                 fi
-                # File is not owned by active user, and not readable by him
-                if [ ! -O "${FILE}" -a ! -r "${FILE}" ]; then
-                    unsafe=1
-                    LogText "Security alert: file is not readable by active user"
-                fi
             fi
 
             # Check file permissions

From ea9c6dbcc8c6db00160db7691e7407ed83fab361 Mon Sep 17 00:00:00 2001
From: xnoguer <xnoguer@sigge-xnoguer.sigge.cl>
Date: Sun, 23 Apr 2023 17:51:58 -0400
Subject: [PATCH 4/7] Removing

---
 lynis | 22 +++++-----------------
 1 file changed, 5 insertions(+), 17 deletions(-)

diff --git a/lynis b/lynis
index 5aa219b7..1f401b97 100755
--- a/lynis
+++ b/lynis
@@ -148,25 +148,13 @@
     # Perform a basic check for permissions. After including functions, using SafePerms()
     IGNORE_FILE_PERMISSION_ISSUES=0
 
-    FILES_TO_CHECK="consts functions parameters binaries osdetection data_upload"
+    FILES_TO_CHECK="consts functions"
 
     ISSUE=0
     ISSUE_TYPE=""
     SHOWPERMERROR=0
 
     for FILE in ${FILES_TO_CHECK}; do
-        SUGGESTED_PERMS=640
-        if [ ${PRIVILEGED} -eq 0 ]; then
-            SUGGESTED_PERMS=644
-        fi
-
-        # First check if files are readable so the shell can execute them
-        if [ ! -r ${INCLUDEDIR}/${FILE} ]; then
-            ISSUE=1
-            ISSUE_TYPE="perms"
-            echo "[!] Change file permissions of ${INCLUDEDIR}/${FILE} to ${SUGGESTED_PERMS}."; echo "    Command: chmod ${SUGGESTED_PERMS} ${INCLUDEDIR}/${FILE}"
-        fi
-
         PERMS=$(ls -l ${INCLUDEDIR}/${FILE} | cut -c 2-10)
         GROUPPERMS=$(ls -l ${INCLUDEDIR}/${FILE} | cut -c 5-7)
         GROUPOWNERID=$(ls -n ${INCLUDEDIR}/${FILE} | awk '{ print $4 }')
@@ -229,10 +217,10 @@
 
     # Extract the short notation of the language (first two characters).
     if [ -x "$(command -v locale 2> /dev/null)" ]; then
-        LANGUAGE=$(locale | grep -E "^LANG=" | cut -d= -f2 | cut -d_ -f1 | tr -d '"' | grep -E "^[a-z]{2}$")
+        LANGUAGE=$(locale | egrep "^LANG=" | cut -d= -f2 | cut -d_ -f1 | tr -d '"' | grep -E "^[a-z]{2}$")
         # Try locale command if shell variable had no value
         if [ -z "${DISPLAY_LANG}" ]; then
-            DISPLAY_LANG=$(locale | grep -E "^LANG=" | cut -d= -f2)
+            DISPLAY_LANG=$(locale | egrep "^LANG=" | cut -d= -f2)
         fi
     else
         LANGUAGE="en"
@@ -1048,7 +1036,7 @@ ${NORMAL}
                 if SafeFile ${INCLUDE_FILE}; then
                     . ${INCLUDE_FILE}
                 else
-                    LogText "Exception: skipping test category ${INCLUDE_TEST}, file ${INCLUDE_FILE} has bad permissions (should be 644, 640, 600 or 400)"
+                    LogText "Exception: skipping test category ${INCLUDE_TEST}, file ${INCLUDE_FILE} has bad permissions (should be 640, 600 or 400)"
                     ReportWarning "NONE" "Invalid permissions on tests file tests_${INCLUDE_TEST}"
                     # Insert a section and warn user also on screen
                     InsertSection "${SECTION_GENERAL}"
@@ -1075,7 +1063,7 @@ ${NORMAL}
                 LogText "Result: file permissions fine, running custom tests"
                 . ${INCLUDEDIR}/tests_custom
             else
-                LogText "Exception: skipping custom tests, file has bad permissions (should be 644, 640, 600 or 400)"
+                LogText "Exception: skipping custom tests, file has bad permissions (should be 640, 600 or 400)"
                 ReportWarning "NONE" "Invalid permissions on custom tests file"
                 Display --indent 2 --text "- Running custom tests... " --result "${STATUS_WARNING}" --color RED
             fi

From 25a5d7af40070566cebc6a19c8f4841aabca100e Mon Sep 17 00:00:00 2001
From: xnoguer <xnoguer@sigge-xnoguer.sigge.cl>
Date: Sun, 23 Apr 2023 17:53:22 -0400
Subject: [PATCH 5/7] Removing

---
 lynis | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/lynis b/lynis
index 1f401b97..a92e3556 100755
--- a/lynis
+++ b/lynis
@@ -163,11 +163,11 @@
 
         # Check permissions of include/X file (400, 600, 640, 644)
         if [ "${PERMS}" = "rwxrwxrwx" ]; then
-            ISSUE=1; ISSUE_TYPE="perms"; echo "[!] Change file permissions of ${INCLUDEDIR}/${FILE} to ${SUGGESTED_PERMS}."; echo "    Command: chmod ${SUGGESTED_PERMS} ${INCLUDEDIR}/${FILE}"
+            ISSUE=1; ISSUE_TYPE="perms"; echo "[!] Change file permissions of ${INCLUDEDIR}/${FILE} to 640."; echo "    Command: chmod 640 ${INCLUDEDIR}/${FILE}"
         elif [ ! "${PERMS}" = "r--------" -a ! "${PERMS}" = "rw-------" -a ! "${PERMS}" = "rw-r-----" -a ! "${PERMS}" = "rw-r--r--" ]; then
             # If group ID equals user ID, we consider permissions to be fine (probably default umask)
             if [ ! "${GROUPOWNERID}" = "${OWNERID}" ]; then
-                ISSUE=1; ISSUE_TYPE="perms"; echo "[!] Change file permissions of ${INCLUDEDIR}/${FILE} to ${SUGGESTED_PERMS}."; echo "    Command: chmod ${SUGGESTED_PERMS} ${INCLUDEDIR}/${FILE}"
+                ISSUE=1; ISSUE_TYPE="perms"; echo "[!] Change file permissions of ${INCLUDEDIR}/${FILE} to 640."; echo "    Command: chmod 640 ${INCLUDEDIR}/${FILE}"
             fi
         fi
 
@@ -217,10 +217,10 @@
 
     # Extract the short notation of the language (first two characters).
     if [ -x "$(command -v locale 2> /dev/null)" ]; then
-        LANGUAGE=$(locale | egrep "^LANG=" | cut -d= -f2 | cut -d_ -f1 | tr -d '"' | grep -E "^[a-z]{2}$")
+        LANGUAGE=$(locale | grep -E "^LANG=" | cut -d= -f2 | cut -d_ -f1 | tr -d '"' | grep -E "^[a-z]{2}$")
         # Try locale command if shell variable had no value
         if [ -z "${DISPLAY_LANG}" ]; then
-            DISPLAY_LANG=$(locale | egrep "^LANG=" | cut -d= -f2)
+            DISPLAY_LANG=$(locale | grep -E "^LANG=" | cut -d= -f2)
         fi
     else
         LANGUAGE="en"

From 346b843662376002e34c2e92a1914ae5233c56b0 Mon Sep 17 00:00:00 2001
From: xnoguer <xnoguer@sigge-xnoguer.sigge.cl>
Date: Sun, 23 Apr 2023 17:54:01 -0400
Subject: [PATCH 6/7] Removing

---
 lynis | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lynis b/lynis
index a92e3556..3a628424 100755
--- a/lynis
+++ b/lynis
@@ -193,7 +193,7 @@
     if [ ${ISSUE} -eq 1 ]; then
         printf "\n[X] Security check failed\n\n    Why do I see this error?\n    -------------------------------\n    This is a protection mechanism to prevent the root user from executing user created files. The files may be altered, or including malicious pieces of script.\n\n    What can I do?\n    ---------------------\n    Option 1) Check if a trusted user created the files (e.g. due to using Git, Homebrew or similar).\n              If you trust these files, you can decide to continue this run by pressing ENTER.\n"
         if [ "${ISSUE_TYPE}" = "perms" ]; then
-            printf "\n    Option 2) Change permissions of the related files.\n\n       Commands (full directory):\n         # chmod ${SUGGESTED_PERMS} include/*\n         # ./lynis audit system"
+            printf "\n    Option 2) Change permissions of the related files.\n\n       Commands (full directory):\n         # chmod 640 include/*\n         # ./lynis audit system"
         elif [ "${ISSUE_TYPE}" = "owner" ]; then
             printf "\n    Option 2) Change ownership of the related files (or full directory).\n\n       Commands (full directory):\n         # cd ..\n         # chown -R 0:0 lynis\n         # cd lynis\n         # ./lynis audit system"
         fi

From c845cecb6fb709d3bc81e0519688ff2bd5a5fe61 Mon Sep 17 00:00:00 2001
From: xnoguer <xnoguer@sigge-xnoguer.sigge.cl>
Date: Sun, 23 Apr 2023 19:00:16 -0400
Subject: [PATCH 7/7] Fixing test

---
 include/tests_php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/tests_php b/include/tests_php
index 858bc14b..04502f68 100644
--- a/include/tests_php
+++ b/include/tests_php
@@ -285,7 +285,7 @@
     # Test        : PHP-2368
     # Description : Check php register_globals option
     # Notes       : Don't test for it if PHP version is 5.4.0 or later (it has been removed)
-    if [ -n "${PHPINIFILE}" -a -n "${PHPVERSION}" -a -n "${GREPBINARY} -E" ]; then
+    if [ -n "${PHPINIFILE}" -a -n "${PHPVERSION}" -a -n "${GREPBINARY}" ]; then
         if [ -f "${PHPINIFILE}" ]; then
             FIND=$(echo ${PHPVERSION} | ${GREPBINARY} -E "^(4.|5.[0-3])")
             if [ -z "${FIND}" ]; then