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WARN

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Sends an urgent message to jobs/sessions.

Syntax

WARN { @ [#] Jnnn [#] Snnn [jsname,] user.acct } [;message]

Parameters

@

All users receive the message (including those running in QUIET mode).

#Jnnn

A job number (assigned by MPE/iX) for the job that is to receive the message.

#Snnn

A session number (assigned by MPE/iX) for the job that is to receive the message. Only jobs submitted on interactive devices can receive messages.

jsname, user.acct

The names of the job/session and user to receive the message and the account name under which they are running. (These names are the same as those entered with the JOB or HELLO command.) If several users are running under the same job/session identity, MPE/iX sends the message to all of them.

message

The message text, consisting of any string of ASCII characters containing no more than 67 characters. The message is terminated by Return. Default is that no message is printed.

Operation Notes

Sends an urgent message, interrupting any current pending read or write in progress. The message appears on the list devices of all sessions (even those that are QUIET) as:

 OPERATOR WARNING:  text

Messages sent with the WARN command are received by a job only if the job was submitted on an interactive device.

The user has the option of running a session in QUIET mode. In that case, TELL messages from other users are suppressed. WARN messages generated at the system console, however, override QUIET mode.

NOTE: Use caution when sending a warning to users. The WARN command overrides a block mode screen.

Use

This command may be issued from a session, job, program, or in BREAK. Pressing Break has no effect on this command. It may be issued only from the console unless distributed to users with the ALLOW command.

Example

To send a WARN message to all sessions, followed by a WARN message to session #S51, enter:

 WARN @;THE SYSTEM WILL SHUTDOWN IN 5 MINUTES. PLS LOG OFF.
WARN #S51;LAST CHANCE TO LOG OFF GRACEFULLY.

Related Information

Commands

TELL, TELLOP

Manuals

Performing System Operation Tasks

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