遍历目录处理特定目录的shell脚本

#!/bin/bash
#
#site: www.jiaochengji.com
cd /home/wanggy/rmfile/
ls  -l | grep ^d | awk '{print $NF}'  >/home/wanggy/tmp
cat /home/wanggy/tmp  |while  read dir1
  do
    cd $dir1
    echo "第一级目录 $dir1"
    ls  -l | grep ^d | awk '{print $NF}'  >/home/wanggy/tmp1
    cat /home/wanggy/tmp1  |while read dir2
         do
            echo "二级目录 $dir2"
            cd $dir2
               #对大于2012年的目录再判断,小于则直接删除。
               if [ $dir2 -gt 2011 ];then
                  ls  -l | grep ^d | awk '{print $NF}'  >/home/wanggy/tmp2
                  cat /home/wanggy/tmp2 |while read dir3
                      do
                         #9月份之前的删除"
                         if [ $dir3 -lt 09 ];then
                              rm -rf $dir3
                         fi
                      done
               else
                  echo "删除2012前的目录:$dir2"
                  rm -rf $dir2
             fi
                 #返回上一级
                 cd ..
        done
             #返回上一级
     cd ..
 done