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+.\"	$OpenBSD: pause.3,v 1.17 2022/12/30 21:21:25 cheloha 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.
+.\"
+.Dd $Mdocdate: December 30 2022 $
+.Dt PAUSE 3
+.Os
+.Sh NAME
+.Nm pause
+.Nd wait for a signal
+.Sh SYNOPSIS
+.In unistd.h
+.Ft int
+.Fn pause void
+.Sh DESCRIPTION
+.Bf -symbolic
+.Fn pause
+is obsoleted by
+.Xr sigsuspend 2 .
+.Ef
+.Pp
+.Fn pause
+blocks the calling thread until it receives an unmasked signal.
+.Sh RETURN VALUES
+.Fn pause
+always returns \-1.
+.Sh ERRORS
+.Fn pause
+always sets
+.Xr errno 2
+to the following value:
+.Bl -tag -width Er
+.It Bq Er EINTR
+The call was interrupted by a signal.
+.El
+.Sh SEE ALSO
+.Xr kill 2 ,
+.Xr setitimer 2 ,
+.Xr sigprocmask 2 ,
+.Xr sigsuspend 2 ,
+.Xr signal 3
+.Sh HISTORY
+A
+.Fn pause
+system call first appeared outside of Bell Labs in the
+.Dq 50 changes
+tape for
+.At v6 .
+It was first officially released with PWB/UNIX 1.0.
+It was reimplemented as a wrapper around the
+.Fn sigpause
+and
+.Fn sigblock
+system calls in
+.Bx 4.2 ,
+and around the
+.Xr sigsuspend 2
+and
+.Xr sigprocmask 2
+system calls in
+.Bx 4.3 Reno .