How to use the yum command to clear the cache list under centos

Yum method to clear the cache list:

1. Clear the software packages in the cache directory. Clear the cache under (/var/cache/yum)

yum clean packages　

2. Clear the headers in the cache directory

yum clean headers

(Recommended tutorial: centos tutorial)

3. Clear the old headers in the cache directory

yum clean oldheaders

4. Clear the software packages and old headers in the cache directory

yum clean all (= yum clean packages; yum clean oldheaders)

In addition: If you encounter the problem that /var/run/yum.pid has been locked when running yum, the PID is xxxx Another program is running problem solved.

Solution:

rm -f /var/run/yum.pid

It can be used by running yum again after deleting the file.

Recommended related video tutorials: linux video tutorial

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