#!/bin/bash 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