GNU/Linux man pages
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GNU/Linux |
Debian 6.0.5(Squeeze) |
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wall(1) |
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WALL(1) BSD General Commands Manual WALL(1)
NAME
wall — write a message to users
SYNOPSIS
wall [file]
DESCRIPTION
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 messages.
Reading from a file is refused when the invoker is not superuser and the program is suid or sgid.
SEE ALSO
mesg(1), talk(1), write(1), shutdown(8)
HISTORY
A wall command appeared in Version 7 AT&T UNIX.
AVAILABILITY
The wall command is part of the util-linux-ng package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.
Linux 0.99 March 8, 1993 Linux 0.99
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wall(1) | |