WALL(8) WALL(8) NAME wall - write to all users SYNOPSIS /etc/wall DESCRIPTION Wall reads its standard input until an end-of-file. It then sends this message, preceded by `Broadcast Message ...', to all logged in users. The sender should be super-user to override any protections the users may have invoked. FILES /dev/tty? /etc/utmp SEE ALSO mesg(1), write(1) DIAGNOSTICS `Cannot send to ...' when the open on a user's tty file fails.