bsd man page for wall

WALL(1) 						      General Commands Manual							   WALL(1)

NAME
       wall - write to all users

SYNOPSIS
       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?
       /var/run/utmp

SEE ALSO
       mesg(1), write(1)

DIAGNOSTICS
       `Cannot send to ...' when the open on a user's tty file fails.

4th Berkeley Distribution					 November 27, 1996							   WALL(1)