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Annotation of coherent/g/usr/bin/gzip/zforce.in, revision 1.1.1.1

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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