semget

See the current Perl documentation for semget.

Here is our local, out-dated (pre-5.6) version:

semget - get set of SysV semaphores

semget KEY,NSEMS,FLAGS

Calls the System V IPC function semget. Returns the semaphore id, or the undefined value if there is an error. See also IPC::SysV and IPC::SysV::Semaphore documentation.