WALL(1) BSD General Commands Manual WALL(1)NAMEwall — write a message to users
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 mes‐
SEE ALSOmesg(1), talk(1), write(1), shutdown(8)HISTORY
A wall command appeared in Version 7 AT&T UNIX.
4th Berkeley Distribution June 6, 1993 4th Berkeley Distribution