docs-common/bin move-if-change,NONE,1.1

[Tommy Reynolds (jtr)]

Author: jtr

Update of /cvs/docs/docs-common/bin
In directory cvs-int.fedora.redhat.com:/tmp/cvs-serv22813

Added Files:
	move-if-change 
Log Message:
Conditionally move source file to target if, and only if, their
content differs.  This can help avoid unnecessary rebuilds when
working with derived files.



--- NEW FILE move-if-change ---
#!/bin/sh

# Copyright (C) 1996 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

if
test -r $2
then
if
cmp $1 $2 > /dev/null
then
echo $2 is unchanged
rm -f $1
else
mv -f $1 $2
fi
else
mv -f $1 $2
fi