compressdir

早期freebsd实现

OPTIONS=
FILES=
for ARG
do
	case "$ARG" in
	-*)	OPTIONS="$OPTIONS $ARG";;
	*)	FILES="$FILES $ARG";;
	esac
done
if test -z "$FILES"; then
	FILES="."
fi
set $FILES
find $@ -type f -links 1 -exec test -r {} -a -s {} \; \
-exec expr '(' {} : '.*\.Z' ')' '=' 0 \; \
-exec compress $OPTIONS {} \; >/dev/null