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-.\" Copyright (c) 1980, 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.
-.\"
-.\"     @(#)_exit.2	8.1 (Berkeley) 6/4/93
-.\"
-.Dd September 8, 2016
-.Dt EXIT 2
-.Os
-.Sh NAME
-.Nm _exit
-.Nd terminate the calling process
-.Sh LIBRARY
-.Lb libc
-.Sh SYNOPSIS
-.In unistd.h
-.Ft void
-.Fn _exit "int status"
-.Sh DESCRIPTION
-The
-.Fn _exit
-system call
-terminates a process with the following consequences:
-.Bl -bullet
-.It
-All of the descriptors open in the calling process are closed.
-This may entail delays, for example, waiting for output to drain;
-a process in this state may not be killed, as it is already dying.
-.It
-If the parent process of the calling process has an outstanding
-.Xr wait 2
-call
-or catches the
-.Dv SIGCHLD
-signal,
-it is notified of the calling process's termination and
-the
-.Fa status
-is set as defined by
-.Xr wait 2 .
-.It
-The parent process-ID of all of the calling process's existing child
-processes are set to the process-ID of the calling process's reaper;
-the reaper (normally the initialization process)
-inherits each of these processes
-(see
-.Xr procctl 2 ,
-.Xr init 8
-and the
-.Sx DEFINITIONS
-section of
-.Xr intro 2 ) .
-.It
-If the termination of the process causes any process group
-to become orphaned (usually because the parents of all members
-of the group have now exited; see
-.Dq orphaned process group
-in
-.Xr intro 2 ) ,
-and if any member of the orphaned group is stopped,
-the
-.Dv SIGHUP
-signal and the
-.Dv SIGCONT
-signal are sent to all members of the newly-orphaned process group.
-.It
-If the process is a controlling process (see
-.Xr intro 2 ) ,
-the
-.Dv SIGHUP
-signal is sent to the foreground process group of the controlling terminal,
-and all current access to the controlling terminal is revoked.
-.El
-.Pp
-Most C programs call the library routine
-.Xr exit 3 ,
-which flushes buffers, closes streams, unlinks temporary files, etc.,
-before
-calling
-.Fn _exit .
-.Sh RETURN VALUES
-The
-.Fn _exit
-system call
-can never return.
-.Sh SEE ALSO
-.Xr fork 2 ,
-.Xr sigaction 2 ,
-.Xr wait 2 ,
-.Xr exit 3 ,
-.Xr init 8
-.Sh STANDARDS
-The
-.Fn _exit
-system call is expected to conform to
-.St -p1003.1-90 .
-.Sh HISTORY
-The
-.Fn _exit
-function appeared in
-.At v7 .