WALL(1)                 COMMAND REFERENCE                 WALL(1)



NAME
     wall - write to all users

SYNOPSIS
     wall [ filename ]

DESCRIPTION
     The wall command reads its standard input until an end-of-
     file; it then sends that message, preceded by Broadcast
     Message ..., to all logged in users.

     The sender should be superuser to override any protections
     the users may have invoked.

EXAMPLES
     The following example attempts to broadcast the message
     contained in the file mesg to all logged in users:

           wall mesg

FILES
     /dev/tty?
             user terminal ports

     /etc/utmp
             active login information

DIAGNOSTICS
     Cannot send to ...
                  This message is given when the open on a user's
                  tty file fails.

RETURN VALUE
     [NO_ERRS]      Command completed without error.

     [USAGE]        Incorrect command line syntax. Execution
                    terminated.

     [NP_WARN]      An error warranting a warning message
                    occurred. Execution continues.

     [NP_ERR]       An error occurred that was not a system
                    error.  Execution terminated.

     [P_ERR]        A system error occurred. Execution
                    terminated.  See intro(2) for more
                    information on system errors.

CAVEATS
     The maximum message length is 3000 characters.





Printed 4/6/89                                                  1

WALL(1)                 COMMAND REFERENCE                 WALL(1)



SEE ALSO
     mesg(1) and write(1).





















































Printed 4/6/89                                                  2

%%index%%
na:240,77;
sy:317,169;
de:486,428;
ex:914,237;
fi:1151,185;
di:1336,261;
rv:1597,665;
ca:2262,132;
se:2706,178;
%%index%%000000000145