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This article mainly shows you "how to do crontab invalid under ubuntu", the content is simple and easy to understand, organized clearly, I hope to help you solve doubts, let Xiaobian lead you to study and learn "how to do crontab invalid under ubuntu" this article bar.

Enable crontab in Debain docker. If there is a problem, handle it for a day. Make a special record. Debain and ubuntu are similar, so they are counted under ubuntu.

1. First question, install crontab

apt-get install cron

See clearly, it's cron, not crond! You don't need to install vixie-cron or anything like that under centos! All kinds of tutorials for centos on the internet really made me miserable! Remember, in ubuntu only one command above is enough!

2. Start crontab service

/etc/init.d/cron status #View status/etc/init.d/cron restart #Start service

View status with ps -ef| Grep cron works, service start cron works. Just remember, cron, not crond! Crond is used for centos.

3. For docker, if you don't use docker, you can skip this step

Modify/etc/pam.d/cron file, change required to sufficient, and restart cron service: /etc/init.d/cron restart

4. Absolute paths must be used in scripts

Whether it's a shell script or a python script, all paths must be absolute!

5. Import the required environment variables

cases

0 8 * * * . /etc/profile; /bin/sh /home/abc/test.sh0 8 * * * /bin/usr/python2.7 /home/abc/test.py

All of this is ok, there should be no problem.

The above is "ubuntu crontab invalid how to do" all the content of this article, thank you for reading! I believe that everyone has a certain understanding, hope to share the content to help everyone, if you still want to learn more knowledge, welcome to pay attention to the industry information channel!

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