保留目录十个最新文件

#!/bin/bash

Filelist=$(ls -l /data/backup/|egrep "^d"|awk '{print $9}')

for i in $Filelist;
do

        count=$(ls -l /data/backup/$i|grep -v total|wc -l)
        while(($count > 10));
        do
                OldFile=$(ls -rt /data/backup/$i|sort -n|head -1)
                echo "Delete File："/data/backup/$i/$OldFile;
                rm -f /data/backup/$i/$OldFile
                count=$(ls -l /data/backup/$i|grep -v total|wc -l)
        done
done