wall(1) Mac OS X Manual Page

Mac Dev Center Mac OS X Reference Library General Mac OS X Man Pages

This manual page is for Mac OS X version 10.6.3

If you are running a different version of Mac OS X, view the documentation locally:

In Terminal, using the man(1) command

Reading manual pages

Manual pages are intended as a quick reference for people who already understand a technology.

For more information about the manual page format, see the manual page for manpages(5).
For more information about this technology, look for other documentation in the Apple Reference Library.
For general information about writing shell scripts, read Shell Scripting Primer.


WALL(1)                                  BSD General Commands Manual                                 WALL(1)

NAME
     wall -- write a message to users

SYNOPSIS
     wall [-g group] [file]

DESCRIPTION
     The wall utility 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.

     -g      Send messages to users in this group.  This option may be specified multiple times, and any
             user in any of the specified groups will receive the message.

SEE ALSO
     mesg(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

Reporting Problems

The way to report a problem with this manual page depends on the type of problem:

Content errors: Report errors in the content of this documentation with the feedback links below.
Bug reports: Report bugs in the functionality of the described tool or API through Bug Reporter.
Formatting problems: Report formatting mistakes in the online version of these pages with the feedback links below.

Did this document help you?