New spinner for gravity.sh

Spinner in gravity.sh now matches basic-install.sh and uninstall.sh

gravity.sh

@@ -75,18 +75,19 @@ if [[ -r $piholeDir/pihole.conf ]];then
 fi
 
 
-spinner(){
+spinner()
+{
     local pid=$1
-
-        spin='-\|/'
-        i=0
-        while $SUDO kill -0 "$pid" 2>/dev/null
-        do
-                i=$(( (i+1) %4 ))
-                printf "\b%s" "${spin:$i:1}"
-                sleep .1
+    local delay=0.50
+    local spinstr='|/-\'
+    while [ "$(ps a | awk '{print $1}' | grep "$pid")" ]; do
+        local temp=${spinstr#?}
+        printf " [%c]  " "$spinstr"
+        local spinstr=$temp${spinstr%"$temp"}
+        sleep $delay
+        printf "\b\b\b\b\b\b"
     done
-        printf "\b"
+    printf "    \b\b\b\b"
 }
 
 ###########################