xref: /freebsd/bin/sh/funcs/suspend (revision 952d112864d8008aa87278a30a539d888a8493cd)
1# Copyright (c) 1991, 1993
2#	The Regents of the University of California.  All rights reserved.
3#
4# This code is derived from software contributed to Berkeley by
5# Kenneth Almquist.
6#
7# Redistribution and use in source and binary forms, with or without
8# modification, are permitted provided that the following conditions
9# are met:
10# 1. Redistributions of source code must retain the above copyright
11#    notice, this list of conditions and the following disclaimer.
12# 2. Redistributions in binary form must reproduce the above copyright
13#    notice, this list of conditions and the following disclaimer in the
14#    documentation and/or other materials provided with the distribution.
15# 3. All advertising materials mentioning features or use of this software
16#    must display the following acknowledgement:
17#	This product includes software developed by the University of
18#	California, Berkeley and its contributors.
19# 4. Neither the name of the University nor the names of its contributors
20#    may be used to endorse or promote products derived from this software
21#    without specific prior written permission.
22#
23# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33# SUCH DAMAGE.
34#
35#	@(#)suspend	8.2 (Berkeley) 5/4/95
36#	$Id$
37
38suspend() {
39	local -
40	set +j
41	kill -TSTP 0
42}
43