Glad i could help! I dont know if you are able to set up menu's on your system, but what i did is wrote a scriptfile that i call from the menu!
Here's an example...
echo " You are about to broadcast a message to ALL users "
echo " On this Network! Press Enter to continue. "
echo " Type your message here... "
echo "Here is your message! Press ENTER to Continue!"
what's nice about having a scriptfile is that your users dont have to go to the bash (command line) to be able to "Wall" a message, but they can do it from a menu option on the software! <<------ just a thought!