每天凌晨3点30分 我有一个日记 来创建数据库备份
文件名的缩略语是 liver_YYYYYY_MM_DD.sql.gz, YYYYY、 MM 和 DD 是备份日的日期 。
通常情况下,我进去删除旧的备份,但我想将备份数量限制在3个最新备份。 有没有办法通过某种程序或脚本做到这一点?
谢谢 谢谢
编辑 :
我根据
简单的 shell 脚本可以完成此项任务, 但您最好学习一下用于完成此任务的标准工具 : < a href=" http://linuxcommander.org/ man_ pages/logrotate8. html" rel=“ nofollow” >logrotate 。 当您需要更老的备份文件管理修改时, 而不是修改家用版本的脚本, 它只是更改对数配置条目的问题 。
ls -t live_*.sql.gz|awk NR>3 |xargs echo
如果这回响了正确的文件, 请使用 < code> rm 而不是 < code> > echo 。 将其放在备份脚本中的适当位置, 不需要安装对数 。
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