NAME
wall
- write a message to users
SYNOPSIS
wall
[-g group]
[file]
DESCRIPTION
wall
displays the contents of
file
or, by default, its standard input, on the terminals of all
currently logged in users.
Only the super-user can write on the
terminals of users who have chosen
to deny messages or are using a program which
automatically denies messages.
- -g
-
Send messages to users in this group.
This option may be specified multiple times, and any user in any of the
specified groups will receive the message.
SEE ALSO
mesg(1),
talk(1),
write(1),
shutdown(8)
HISTORY
A
wall
command appeared in
Version 7 AT&T UNIX
.
Support for
-g
was added in
NetBSD2.0
(from
OpenBSD2.0).