$home/manuals/unix_v8/8/wall

WALL(8)                     System Manager's Manual                    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.



                                                                       WALL(8)