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Annotation of coherent/g/usr/bin/gzip/zforce, revision 1.1

1.1     ! root        1: :
        !             2: #!/bin/sh
        !             3: # zforce: force a z extension on all gzip files so that gzip will not
        !             4: # compress them twice.
        !             5: #
        !             6: # This can be useful for files with names truncated after a file transfer.
        !             7: # 12345678901234 is renamed to 123456789012.z
        !             8: 
        !             9: x=`basename $0`
        !            10: if test $# = 0; then
        !            11:   echo "force a '.z' extension on all gzip files"
        !            12:   echo usage: $x files...
        !            13:   exit 1
        !            14: fi
        !            15: 
        !            16: res=0
        !            17: for i do
        !            18:   if test ! -f "$i" ; then
        !            19:     echo ${x}: $i not a file
        !            20:     res=1
        !            21:     continue
        !            22:   fi
        !            23:   test `expr "$i" : '.*[.-]z$'` -eq 0 || continue
        !            24:   test `expr "$i" : '.*[.]t[ag]z$'` -eq 0 || continue
        !            25: 
        !            26:   gzip -t "$i" 2>/dev/null || continue
        !            27: 
        !            28:   if test `expr "$i" : '^.............$'` -eq 13; then
        !            29:     new=`expr "$i" : '\(.*\).$`.z
        !            30:   else
        !            31:     new="$i.z"
        !            32:   fi
        !            33:   if mv "$i" "$new" 2>/dev/null; then
        !            34:     echo $i -- replaced with $new
        !            35:     continue
        !            36:   fi
        !            37:   new=`expr "$i" : '\(.*\)..$`.z
        !            38: 
        !            39:   if mv "$i" "$new" 2>/dev/null; then
        !            40:     echo $i -- replaced with $new
        !            41:     continue
        !            42:   fi
        !            43:   res=1; echo ${x}: cannot rename $i to $new
        !            44: done
        !            45: exit $res

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