When does /tmp get cleared?

Do I need to enable it this way? I am running Centos 7

systemctl enable systemd-tmpfiles-clean.service

What would be the implications?


Submit an answer

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

Sign In or Sign Up to Answer

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

How to enable systemd-tmpfiles-clean.service?

I run ‘systemctl enable systemd-tmpfiles-clean.service’ but with error:

The unit files have no [Install] section. They are not meant to be enabled using systemctl…


–clean: If this option is passed, all files and directories with an age parameter configured will be cleaned up.

May I know what is an ‘age parameter’?

systemd-tmpfiles-clean.service clears /tmp before shutdown. /tmp contains temporary files that some programs need, but do not expect them to be persisted across reboots.

In some cases, /tmp is mounted as a tmpfs filesystem which is stored entirely in RAM and is automatically cleared on reboot. However, that is not the case in the CentOS 7 image so you will need to enable systemd-tmpfiles-clean.service in order to have /tmp cleared on shutdown.