Merge pull request #973 from pi-hole/taillog

Add tail argument to automatically "tail -f" pihole.log

pihole

@@ -198,6 +198,11 @@ piholeStatus() {
   fi
 }
 
+tailFunc() {
+  echo "Press Ctrl-C to exit"
+  tail -F /var/log/pihole.log
+  exit 0
+}
 
 helpFunc() {
 	cat << EOM
@@ -211,6 +216,7 @@ helpFunc() {
 :::  -b, blacklist            Blacklist domains
 :::  -d, debug                Start a debugging session if having trouble
 :::  -f, flush                Flush the pihole.log file
+:::  -t, tail                 Output the last lines of the pihole.log file. Lines are appended as the file grows
 :::  -up, updatePihole        Update Pi-hole
 :::  -r, reconfigure          Reconfigure or Repair Pi-hole
 :::  -g, updateGravity        Update the list of ad-serving domains
@@ -257,5 +263,6 @@ case "${1}" in
   "status"                      ) piholeStatus "$2";;
   "restartdns"                  ) restartDNS;;
   "-a" | "admin"                ) webpageFunc "$@";;
+  "-t" | "tail"                 ) tailFunc;;
   *                             ) helpFunc;;
 esac