1. touch xxx(文件名字).sh
2. vim xxx.sh
写入 -----------------------
#!/bin/sh
cd `dirname $0`
pwd
d=`date +%Y%m%d`
d7=`date -d'7 day ago' +%Y%m%d`
cd ../logs/
cp catalina.out catalina.out.${d}
cat /dev/null > catalina.out
rm -rf catalina.out.${d7}
------------------------- (这个是删除七天以前的log)
路径做对应修改
3. chmod -R 777 xxx.sh
4. vim /etc/crontab
在文件最后 0 2 * * * root /usr/local/wfjb_web_back/xxx.sh
路径对应修改
重启定时任务 service crond restart
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https://blog.csdn.net/snihcel/article/details/30248959
https://www.jb51.net/article/101569.htm
(如果catalina.out 清空不再写入 https://www.cnblogs.com/ainihaozhen/p/9466524.html )