shell脚本自动清理备份文件

7天内的备份全部保留，7天外的备份只保留3份

格式如下：

/u02/applications/micro-shop-20161117-1650.tgz

/u02/applications/micro-shop-20161124-1446.tgz

/u02/applications/micro-shop-20161208-1847.tgz

/u02/applications/micro-shop-20161222-1337.tgz

/u02/applications/micro-shop-20170105-1527.tgz

/u02/applications/micro-shop-20170112-1501.tgz

/u02/applications/shop-portal-20161222-1349.tgz

/u02/applications/shop-portal-20161223-0206.tgz

/u02/applications/wechat-20150430-1750.tgz

/u02/applications/wechat-20150507-1013.tgz

/u02/applications/wechat-20150507-1514.tgz

/u02/applications/wechat-20150515-1713.tgz

/u02/applications/wechat-20150527-1123.tgz

/u02/applications/wechat-20150604-1337.tgz

#!/bin/sh

find /u02/applications -maxdepth 1 -name "*-[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]-[0-9][0-9][0-9][0-9].tgz" -mtime +7 -type f|sort > /tmp/all.txt

cat /tmp/all.txt|awk -F '-[0-9][0-9][0-9][0-9]' '{print $1}'|awk -F '/' '{++S[$4]} END {for(a in S) if(S[a]>3) print a,S[a]-3}' > /tmp/count.txt

while read NAME COUNT

do sed -n  "/$NAME-/p" /tmp/all.txt| sed -n "1,$COUNT p">> /tmp/del.txt

done

cat /tmp/del.txt |xargs -n 10 rm -f

cat /dev/null > /tmp/del.txt