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+.\" Copyright (c) 1990, 1991 The Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" 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.
+.\"
+.\"	$OpenBSD: exit.3,v 1.19 2025/06/03 14:15:53 yasuoka Exp $
+.\"
+.Dd $Mdocdate: June 3 2025 $
+.Dt EXIT 3
+.Os
+.Sh NAME
+.Nm exit
+.Nd perform normal program termination
+.Sh SYNOPSIS
+.In stdlib.h
+.Ft void
+.Fn exit "int status"
+.Sh DESCRIPTION
+The
+.Fn exit
+function terminates a process.
+.Pp
+Before termination it performs the following functions in the
+order listed:
+.Bl -enum -offset indent
+.It
+Call the functions registered with the
+.Xr atexit 3
+function, in the reverse order of their registration.
+.It
+Flush and close all open streams.
+.It
+Unlink all files created with the
+.Xr tmpfile 3
+function.
+.El
+.Pp
+Following this,
+.Fn exit
+calls
+.Xr _exit 2 .
+Note that typically
+.Xr _exit 2
+only passes the lower 8 bits of
+.Fa status
+on to the parent, thus negative values have less meaning.
+.Sh RETURN VALUES
+The
+.Fn exit
+function never returns.
+.Sh SEE ALSO
+.Xr _exit 2 ,
+.Xr atexit 3 ,
+.Xr fflush 3 ,
+.Xr intro 3 ,
+.Xr sysexits 3 ,
+.Xr tmpfile 3
+.Sh STANDARDS
+The
+.Fn exit
+function conforms to
+.St -p1003.1-2024 .
+.Sh HISTORY
+An
+.Fn exit
+function first appeared as a system call in
+.At v1 .
+It has accepted the
+.Fa status
+argument since
+.At v2 .
+In
+.At v7 ,
+the bare system call was renamed to
+.Xr _exit 2 .