msgsnd

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.