Linux之atime，mtime，ctime含义

最近访问时间 access time （-atime）
最近更改时间 modify time （-mtime）
最近状态改动时间 change time（-ctime）

[root@localhost logs]# stat catalina.out
  File: ‘catalina.out’
  Size: 194552480 	Blocks: 379992     IO Block: 4096   regular file
Device: fd00h/64768d	Inode: 67519574    Links: 1
Access: (0640/-rw-r-----)  Uid: (    0/    root)   Gid: (    0/    root)
Context: unconfined_u:object_r:usr_t:s0
Access: 2021-06-10 09:30:51.287998933 +0800
Modify: 2021-06-10 09:30:57.121998406 +0800
Change: 2021-06-10 09:30:57.121998406 +0800
 Birth: -

查找7天之内被改动过内容的文件

[root@localhost logs]# find /opt/tomcat/apache-tomcat/logs -mtime -7
/opt/tomcat/apache-tomcat/logs
/opt/tomcat/apache-tomcat/logs/catalina.out
/opt/tomcat/apache-tomcat/logs/catalina.2021-06-03.log
/opt/tomcat/apache-tomcat/logs/localhost.2021-06-03.log
/opt/tomcat/apache-tomcat/logs/manager.2021-06-03.log
/opt/tomcat/apache-tomcat/logs/host-manager.2021-06-03.log
/opt/tomcat/apache-tomcat/logs/localhost_access_log.2021-06-03.txt
/opt/tomcat/apache-tomcat/logs/catalina.2021-06-10.log
/opt/tomcat/apache-tomcat/logs/localhost.2021-06-10.log
/opt/tomcat/apache-tomcat/logs/manager.2021-06-10.log
/opt/tomcat/apache-tomcat/logs/host-manager.2021-06-10.log
/opt/tomcat/apache-tomcat/logs/localhost_access_log.2021-06-10.txt

当前目录查找

[root@localhost logs]# find ./ -mtime -7
./
./catalina.out
./catalina.2021-06-03.log
./localhost.2021-06-03.log
./manager.2021-06-03.log
./host-manager.2021-06-03.log
./localhost_access_log.2021-06-03.txt
./catalina.2021-06-10.log
./localhost.2021-06-10.log
./manager.2021-06-10.log
./host-manager.2021-06-10.log
./localhost_access_log.2021-06-10.txt
[root@localhost logs]# 

查找60天之前的文件并删除

find ./ -mtime +60 -name "manager*" -exec rm -rf {} \;

find / -mtime -5： “5天之内被更改过的文件”
find / -mtime 5：“5天前的那一天被更改过的文件”
find / -mtime +5：“5天之前被更改过的文件”
我们可以看出有没有 “+，-”的差别是很大的。下面用图来说明一下：

定时删除90天之前文件：
https://www.jianshu.com/p/2f1655c08c78
参考：https://www.cnblogs.com/qiaopei/p/5515189.html