msgrcv - receive a SysV IPC message from a message queue
msgrcv ID,VAR,SIZE,TYPE,FLAGS
Calls the System 
V 
IPC function msgrcv to receive a message from message queue 
ID into variable 
VAR with a maximum message size of 
SIZE. Note that if a message is received, the message type will be the first thing in 
VAR, and the maximum length of 
VAR is 
SIZE plus the size of the message type. Returns 
TRUE if successful, or 
FALSE if there is an error. See also
 IPC::SysV and IPC::SysV::Msg documentation.
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