[ILUG-D] Re: [ILUGC] 1D1C - wall

To display a message on the terminals of all logged-in users $ wall "The system will be rebooted in 20 minutes."

To suppress the banner and show only the text to the logged-in users $ wall -n "The system will be rebooted in 20 minutes."

wall is short for 'write to all'

In 1991 when we got our first UNIX server and serial terminals in the lab, the most widely used command by all our batchmates was 'wall'.