Move help output to function helpFunc, add -h argument.

advanced/Scripts/whitelist.sh

@@ -11,16 +11,7 @@
 # (at your option) any later version.
 
 if [[ $# = 0 ]]; then
-    echo "::: Immediately whitelists one or more domains in the hosts file"
+	helpFunc
-    echo ":::"
-    echo "::: Usage: sudo pihole.sh -w domain1 [domain2 ...]"
-    echo ":::"
-    echo "::: Options:"
-    echo ":::  -d, --delmode		Remove domains from the whitelist"
-    echo ":::  -nr, --noreload		Update Whitelist without refreshing dnsmasq"
-    echo ":::  -f, --force			Force updating of the hosts files, even if there are no changes"
-    echo ":::  -q, --quiet			output is less verbose"
-    exit 1
 fi
 
 #globals
@@ -57,6 +48,21 @@ if [[ -f $piholeIPv6file ]];then
 fi
 
 
+function helpFunc()
+{
+	  echo "::: Immediately whitelists one or more domains in the hosts file"
+    echo ":::"
+    echo "::: Usage: sudo pihole.sh -w domain1 [domain2 ...]"
+    echo ":::"
+    echo "::: Options:"
+    echo ":::  -d, --delmode		Remove domains from the whitelist"
+    echo ":::  -nr, --noreload		Update Whitelist without refreshing dnsmasq"
+    echo ":::  -f, --force			Force updating of the hosts files, even if there are no changes"
+    echo ":::  -q, --quiet			output is less verbose"
+    echo ":::  -h, --help			Show this help dialog"
+    exit 1
+}
+
 function HandleOther(){
   #check validity of domain
 	validDomain=$(echo "$1" | perl -ne'print if /\b((?=[a-z0-9-]{1,63}\.)(xn--)?[a-z0-9]+(-[a-z0-9]+)*\.)+[a-z]{2,63}\b/')
@@ -189,6 +195,7 @@ do
     "-d" | "--delmode"   ) addmode=false;;
     "-f" | "--force"     ) force=true;;
     "-q" | "--quiet"     ) versbose=false;;
+    "-h" | "--help"			 ) helpFunc;;
     *                    ) HandleOther "$var";;
   esac
 done