print help contents elaboration

bmotd.sh

@@ -19,7 +19,7 @@ main () {
 
   # check if root
   if ! isRoot; then
-	  echo 'Script needs root privileges to alter motd. Re-run with sudo.'
+	  echo 'Script needs root privileges to run. Re-run with sudo.'
 	  exit 1
   fi
 
@@ -110,7 +110,11 @@ update() {
 }
 
 function printHelp {
-  printf "./$0 test | update | disable | enable"
+  echo -e "Use: $0 [ test | update | enable | disable ]\n"
+  printf "   %-6s %s\n" "test" "- Print generated motd to standard output. Use for preview."
+  printf "   %-6s %s\n" "update" "- Update /etc/motd file"
+  printf "   %-6s %s\n" "enable" "- Places $0 in /etc and adds cron entry for script to run every minute"
+  printf "   %-6s %s\n\n" "disable" "- Removes cron entry and disables refreshes of /etc/motd"
   exit 0;
 }