wall man page on DigitalUNIX

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wall(1)								       wall(1)

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

SYNTAX
       wall [-c file]

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

DESCRIPTION
       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	 oper‐
       ating  with superuser authority.	 Typically, the root user uses wall to
       warn all users of an impending system shutdown.

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

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

								       wall(1)
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