压缩最后距离修改时间大于1周的文件

bizip2up.sh

cd `dirname $0`
cd $1
for f in `ls | grep -E '^'$1'_[[:digit:]]+$'`
do 
        modify=`date +%s -r $f`
        weekago=`date +%s -d '-1 week'`
        if [ $weekago -gt $modify ]; then 
                echo "Ziping file $f"
                time bzip2 $f
        fi
done