gzip/zforce

   1 #!/bin/sh -
   2 #
   3 # $NetBSD: zforce,v 1.2 2003/12/28 12:43:43 wiz Exp $
   4 # $OpenBSD: zforce,v 1.2 2003/08/05 18:22:17 deraadt Exp $
   5 #
   6 #-
   7 # Copyright (c) 2003 Otto Moerbeek <otto@drijf.net>
   8 #
   9 # Permission to use, copy, modify, and distribute this software for any
  10 # purpose with or without fee is hereby granted, provided that the above
  11 # copyright notice and this permission notice appear in all copies.
  12 #
  13 # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  14 # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  15 # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  16 # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  17 # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  18 # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  19 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  20 #
  21 # $FreeBSD: src/usr.bin/gzip/zforce,v 1.1 2007/01/26 10:19:07 delphij Exp $
  22 prog=`basename $0`
  23 USAGE="usage: $prog file ..."
  24 if test $# -eq 0; then
  25         echo $USAGE
  26         exit 1
  27 fi
  28
  29 ret=0
  30
  31 while test $# -ne 0; do
  32         case "$1" in
  33                 *[._-]gz)
  34                         shift
  35                         ;;
  36                 *.t[ag]z)
  37                         shift
  38                         ;;
  39                 *)
  40                         if file "$1" |
  41                                 grep -q "gzip compressed data" 2> /dev/null
  42                         then
  43                                 n="$1".gz
  44                                 if mv "$1" "$n" 2> /dev/null; then
  45                                         echo "$1" -- renamed to "$n"
  46                                 else
  47                                         ret=1
  48                                         echo $prog: cannot rename "$1" to "$n"
  49                                 fi
  50                         fi
  51                         shift
  52                         ;;
  53         esac
  54 done
  55 exit $ret