WALL(1)								       WALL(1)

NAME    [Toc]    [Back]

     wall - write to all users

SYNOPSIS    [Toc]    [Back]

     /sbin/wall	[-g group] [msg_file]

DESCRIPTION    [Toc]    [Back]

     wall reads	msg_file (or its standard input	if none	specified) until an
     end-of-file.  It then sends this message to all currently logged-in users
     preceded by:

	  Broadcast Message from ...

     If	the -g option is used then only	those users in the specified group as
     defined in	the file /etc/group or the NIS group map are sent the message.
     The list of logged-on users is derived from the file /var/adm/utmp.

     It	is used	to warn	all users, typically prior to shutting down the
     system.

     The sender	must be	super-user to override any protections the users may
     have invoked (see mesg(1)).

NOTE    [Toc]    [Back]

     wall does not send	messages to ftp	users.

FILES    [Toc]    [Back]

     /dev/*
     /var/adm/utmp

SEE ALSO    [Toc]    [Back]

     mesg(1), write(1),	who(1).

DIAGNOSTICS    [Toc]    [Back]

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


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