What is YUM (YellowDog Update Modifier) in centos ?

Yum (Yellowdog Update Modified) is RPM Packet Management system for Fedora, CentOS, Red Hat, OpenSuse etc. Yum history (list, info, summary, repeat, redo, undo, new) commands is added on 3.2.25 version. So this works every Linux Distros, which uses yum 3.2.25 or newer. Yum history command is a really useful in situations where the need to example rollback latest yum activity or undelete some deletes or just see what is updated lately.

Reference Link

11 Useful Yum Commands on CentOS Linux

Posted by Curtis K in Administration, CentOS 6, Package Management, RPM, Yum Feb, 16 2014 No Comments

Yum is the package management system that is used on CentOS Linux. It is responsible for managing packages and their dependencies from Yum repositories, as defined in /etc/yum.repos.d/

In this post, we’ll cover a few common and useful yum commands:

1. Install a yum package:

1	yum install PACKAGE_NAME

2. Remove a yum package:

1	yum remove PACKAGE_NAME

3. Reinstall a yum package:

1	yum reinstall PACKAGE_NAME

4. Search for a yum package:

1	yum search PACKAGE_NAME

5. Display the information of a yum package:

1	yum info PACKAGE_NAME

6. Update installed yum packages:

1	yum update

7. Update specific yum package:

1	yum update PACKAGE_NAME

8. Show yum history:

1	yum history

9. Show a list of enabled yum repositories:

1	yum repolist

10. Find which yum package provides a particular file (eg: /usr/bin/nc):

1	yum whatprovides "*bin/nc"

11. Clear yum cache:

1	yum clean all