|WALL(1)||General Commands Manual||WALL(1)|
wall — 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 superuser can write on the terminals of users who have chosen to deny messages or are using a program which automatically denies messages.
The options are as follows:
Since the sender's
locale(1) need not match the
wall deliberately ignores the
LC_CTYPE environment variable and allows ASCII
printable and space characters only. Non-printable characters and UTF-8
characters are replaced with question marks.
wall command appeared in
Version 7 AT&T UNIX.
|May 8, 2016||OpenBSD-6.5|