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
HISTORY
A wall command appeared in
Version 7 AT&T UNIX. Support for
-g was added in NetBSD 2.0
(from OpenBSD 2.0).