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wall(1) - wall - write a message to users - man 1 wall

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WALL(1)                   BSD General Commands Manual                  WALL(1)

NAME
     wall -- write(1,2) a message to users(1,5)

SYNOPSIS
     wall [file(1,n)]

DESCRIPTION
     Wall displays the contents of file(1,n) or, by default, its standard input, on
     the terminals of all currently logged in(1,8) users.

     Only the super-user can write(1,2) on the terminals of users(1,5) who have chosen
     to deny messages or are using a program which automatically denies mes-
     sages.

     Reading from a file(1,n) is refused when the invoker is not superuser and the
     program is suid or sgid.

SEE ALSO
     mesg(1), talk(1), write(1,2)(1), shutdown(2,8)(8)

HISTORY
     A wall command appeared in(1,8) Version 7 AT&T UNIX.

Linux 0.99                       March 8, 1993                      Linux 0.99

References for this manual (incoming links)