46 lines
989 B
Plaintext
46 lines
989 B
Plaintext
:
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#!/bin/sh
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# zforce: force a z extension on all gzip files so that gzip will not
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# compress them twice.
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#
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# This can be useful for files with names truncated after a file transfer.
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# 12345678901234 is renamed to 123456789012.z
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x=`basename $0`
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if test $# = 0; then
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echo "force a '.z' extension on all gzip files"
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echo usage: $x files...
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exit 1
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fi
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res=0
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for i do
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if test ! -f "$i" ; then
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echo ${x}: $i not a file
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res=1
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continue
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fi
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test `expr "$i" : '.*[.-]z$'` -eq 0 || continue
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test `expr "$i" : '.*[.]t[ag]z$'` -eq 0 || continue
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gzip -t "$i" 2>/dev/null || continue
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if test `expr "$i" : '^.............$'` -eq 13; then
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new=`expr "$i" : '\(.*\).$`.z
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else
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new="$i.z"
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fi
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if mv "$i" "$new" 2>/dev/null; then
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echo $i -- replaced with $new
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continue
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fi
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new=`expr "$i" : '\(.*\)..$`.z
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if mv "$i" "$new" 2>/dev/null; then
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echo $i -- replaced with $new
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continue
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fi
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res=1; echo ${x}: cannot rename $i to $new
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done
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exit $res
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