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#!/bin/sh

# Like mv $1 $2, but if the files are the same, just delete $1.

# Status is zero if successful, nonzero otherwise.

VERSION='2011-01-28 20:09'; # UTC

# The definition above must lie within the first 8 lines in order

# for the Emacs time-stamp write hook (at end) to update it.

# If you change this file with Emacs, please let the write hook

# do its job.  Otherwise, update this string manually.

# Copyright (C) 2002-2007, 2009-2011 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 3 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, see .

usage="usage: $0 SOURCE DEST"

help="$usage

  or:  $0 OPTION

If SOURCE is different than DEST, then move it to DEST; else remove SOURCE.

  --help     display this help and exit

  --version  output version information and exit

The variable CMPPROG can be used to specify an alternative to \`cmp'.

Report bugs to ."

version=`expr "$VERSION" : '\([^ ]*\)'`

version="move-if-change (gnulib) $version

Copyright (C) 2011 Free Software Foundation, Inc.

License GPLv3+: GNU GPL version 3 or later 

This is free software: you are free to change and redistribute it.

There is NO WARRANTY, to the extent permitted by law."

cmpprog=${CMPPROG-cmp}

for arg

do

  case $arg in

    --help | --hel | --he | --h)

      exec echo "$help" ;;

    --version | --versio | --versi | --vers | --ver | --ve | --v)

      exec echo "$version" ;;

    --)

      shift

      break ;;

    -*)

      echo "$0: invalid option: $arg" >&2

      exit 1 ;;

    *)

      break ;;

  esac

done

test $# -eq 2 || { echo "$0: $usage" >&2; exit 1; }

if test -r "$2" && $cmpprog -- "$1" "$2" >/dev/null; then

  rm -f -- "$1"

else

  if mv -f -- "$1" "$2"; then :; else

    # Ignore failure due to a concurrent move-if-change.

    test -r "$2" && $cmpprog -- "$1" "$2" >/dev/null && rm -f -- "$1"

  fi

fi

## Local Variables:

## eval: (add-hook 'write-file-hooks 'time-stamp)

## time-stamp-start: "VERSION='"

## time-stamp-format: "%:y-%02m-%02d %02H:%02M"

## time-stamp-time-zone: "UTC"

## time-stamp-end: "'; # UTC"

## End: