: #!/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="BINDIR:$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