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- #!/bin/sh
- # zforce: force a gz extension on all gzip files so that gzip will not
- # compress them twice.
- #
- # This can be useful for files with names truncated after a file transfer.
- # 12345678901234 is renamed to 12345678901.gz
-
- PATH="/gnu/bin:$PATH"; export PATH
- x=`basename $0`
- if test $# = 0; then
- echo "force a '.gz' extension on all gzip files"
- echo usage: $x files...
- exit 1
- fi
-
- res=0
- for i do
- if test ! -f "$i" ; then
- echo ${x}: $i not a file
- res=1
- continue
- fi
- test `expr "$i" : '.*[.-]z$'` -eq 0 || continue
- test `expr "$i" : '.*[.-]gz$'` -eq 0 || continue
- test `expr "$i" : '.*[.]t[ag]z$'` -eq 0 || continue
-
- if gzip -l < "$i" 2>/dev/null | grep '^defl' > /dev/null; then
-
- if test `expr "$i" : '^............'` -eq 12; then
- new=`expr "$i" : '\(.*\)...$`.gz
- else
- new="$i.gz"
- fi
- if mv "$i" "$new" 2>/dev/null; then
- echo $i -- replaced with $new
- continue
- fi
- res=1; echo ${x}: cannot rename $i to $new
- fi
- done
- exit $res
-