WALL(1) | General Commands Manual | WALL(1)

# 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 NetBSD 2.0 (from OpenBSD 2.0).

March 27, 2003 | NetBSD 9.3