【crontab】
创建任务
crontab -e
如果无权创建，操作
chattr -isa /var/spool/cron
查看任务
crontab -l
查看状态
service crond status
启动服务
/sbin/service crond start
关闭服务
/sbin/service crond stop
重启服务
/sbin/service crond restart
参考任务
00 00 * * * curl https://xxx executed
00 */2 * * * curl https://xxx executed
*/5 * * * * curl https://xxx executed
* * * * * sleep 01; curl https:// executed
* * * * * sleep 20; curl https://www executed
* * * * * sleep 40; curl https://www executed
日志输出到文件
* * * * * php /home/1.php >>/home/1.log
05 * * * * /bin/sh /home/beifen/h.sh executed
15 4 * * * /bin/sh /home/beifen/bf.sh executed
13 2 1 * * /bin/sh /home/beifen/bfyue.sh executed
