4.3BSD-UWisc/man/cat1/wall.1

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WALL(1)             UNIX Programmer's Manual              WALL(1)



NAME
     wall - write to all users

SYNOPSIS
     wall

DESCRIPTION
     _W_a_l_l 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.































Printed 12/27/86         April 29, 1985                         1