WALL(1) BSD General Commands Manual WALL(1)NAMEwall — write a message to users
SYNOPSISwall [-g group] [file]
DESCRIPTION
The wall utility displays the contents of file or, by default, its stan‐
dard 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‐
sages.
-g Send messages to users in this group. This option may be speci‐
fied multiple times, and any user in any of the specified groups
will receive the message.
SEE ALSOmesg(1), talk(1), write(1), shutdown(8)HISTORY
A wall command appeared in PWB UNIX.
BUGS
The sender's LC_CTYPE setting is used to determine which characters are
safe to write to a terminal, not the receiver's (which wall has no way of
knowing).
The wall utility does not recognize multibyte characters.
BSD July 17, 2004 BSD