50 lines
1.8 KiB
Bash
Executable File
50 lines
1.8 KiB
Bash
Executable File
#! /bin/sh
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#
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# Copyright (c) 2004-2006 Motoyuki Kasahara
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. Neither the name of the project nor the names of its contributors
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# may be used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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NEW_FILE=$1
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TARGET_FILE=$2
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if [ ! -r $NEW_FILE ]; then
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echo "$0: cannot read $NEW_FILE" 1>&2
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exit 1
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fi
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if [ ! -r $TARGET_FILE ]; then
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mv -f $NEW_FILE $TARGET_FILE
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else
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if cmp $NEW_FILE $TARGET_FILE > /dev/null 2>&1; then
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echo "$0: $TARGET_FILE is unchanged" 1>&2
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rm -f $NEW_FILE
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else
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mv -f $NEW_FILE $TARGET_FILE
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fi
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fi
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exit 0
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