NAME    [Toc]    [Back]

       wall  - Sends a message to all users logged into the local
       system or to all members of a cluster

SYNTAX    [Toc]    [Back]

       wall [-c file]

OPTIONS    [Toc]    [Back]

       Send message to all users logged into  all  members  of  a
       cluster.

DESCRIPTION    [Toc]    [Back]

       The wall command reads from standard input until you press
       the End-of-File key sequence, or takes its input from  the
       contents of file if you specify it, and sends the input as
       a message to all users who are logged in.  The message  is
       preceded by the heading:

       Broadcast Message from user@node (tty) at hh:mm

       where user is the user invoking wall, node and tty are the
       node and terminal of that user, and hh:mm is the  time  of
       the message.


       To  override  any protections other users have set up, you
       must be operating with  superuser  authority.   Typically,
       the  root user uses wall to warn all users of an impending
       system shutdown.

FILES    [Toc]    [Back]

       To suspend error  messages.   Clusterwide  message-sending
       utility called by the wall command.

SEE ALSO    [Toc]    [Back]

       Commands:  mesg(1), su(1), talk(1), write(1)



                                                          wall(1)