.\"
.TH SEMCTL 2 2012-05-31 "Linux" "Linux Programmer's Manual"
.SH NAME
-semctl \- semaphore control operations
+semctl \- System V semaphore control operations
.SH SYNOPSIS
.nf
.B #include <sys/types.h>
.BR semctl ()
performs the control operation specified by
.I cmd
-on the semaphore set identified by
+on the System V semaphore set identified by
.IR semid ,
or on the
.IR semnum -th