WALL(1) | General Commands Manual | WALL(1) |
wall
— write a
message to users
wall |
[-g group]
[file] |
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:
-g
groupSince the sender's locale(1)
need not match the receivers' locales, 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.
A wall
command appeared in
Version 6 AT&T UNIX.
February 8, 2020 | OpenBSD-current |