March 27, 2003 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 NetBSD2.0 (from OpenBSD2.0).