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+.\"	$OpenBSD: getpid.2,v 1.14 2022/12/30 23:12:12 jsg Exp $
+.\"	$NetBSD: getpid.2,v 1.5 1995/02/27 12:33:12 cgd Exp $
+.\"
+.\" Copyright (c) 1980, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     @(#)getpid.2	8.1 (Berkeley) 6/4/93
+.\"
+.Dd $Mdocdate: December 30 2022 $
+.Dt GETPID 2
+.Os
+.Sh NAME
+.Nm getpid ,
+.Nm getppid
+.Nd get parent or calling process identification
+.Sh SYNOPSIS
+.In unistd.h
+.Ft pid_t
+.Fn getpid void
+.Ft pid_t
+.Fn getppid void
+.Sh DESCRIPTION
+.Fn getpid
+returns the process ID of the calling process.
+Though the ID is guaranteed to be unique, it should
+.Em NOT
+be used for constructing temporary file names; see
+.Xr mkstemp 3
+instead.
+.Pp
+.Fn getppid
+returns the process ID of the parent of the calling process.
+.Sh RETURN VALUES
+These functions are always successful, and no return value is
+reserved to indicate an error.
+.Sh SEE ALSO
+.Xr gethostid 3
+.Sh STANDARDS
+.Fn getpid
+and
+.Fn getppid
+conform to
+.St -p1003.1-2008 .
+.Sh HISTORY
+The
+.Fn getpid
+system call first appeared in
+.At v5 .
+The
+.Fn getppid
+function appeared in
+.At 32v .