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Perl in a Nutshell

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Function Reference
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msgsnd id, msg, flags

Calls the System V IPC msgsnd system call to send the message msg to the message queue id. msg must begin with the long integer message type. You can create a message like this:

$msg = pack "L a*", $type, $text_of_message;
The function returns true if successful, or false if there is an error. On error, it puts the error code into $!. Before calling, you should say:
require "ipc.ph";
require "msg.ph";
This function is available only on machines supporting System V IPC.

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