shell.sh

1）删除DEL_PATH变量下，备份文件的个数大于6的多余文件。

#!/bin/bah
BACKFILE_NUM=6
dir=`ls -l /opt/backup |awk '/^d/ {print $NF}'`


for i in $dir
do
  DEL_PATH="/opt/backup/$i"

 if [ $? -eq 0 ];then
 BACKFILE_NUM=6
 BACKFILE=`ls -lrt $DEL_PATH |awk '/^d/ {print $NF}'`
 #BACKFILE=`ls -lrt $DEL_PATH |awk '/^-/ {print $NF}'`

 NUM_BACKFILE=`ls -lrt $DEL_PATH |awk '/^d/ {print $NF}' |wc -l`

 for BAFI in $BACKFILE
 do
        if [ $NUM_BACKFILE -gt $BACKFILE_NUM ];then
               rm -rf $DEL_PATH/$BAFI
               #echo "rm -rf $DEL_PATH/$BAFI"
               #echo "$NUM_BACKFILE"
        else
                echo "NUM_BACKFILE = $NUM_BACKFILE"
                #exit
        fi
        NUM_BACKFILE=`expr $NUM_BACKFILE - 1`
 done

 fi
done