Yum Commands

1. Display your currently installed software repositories enabled or disabled and the status of each:
yum repolist all

1	yum repolist all

2. Search the currently enabled repos for a specific string (in this case we’re wondering what php packages are available):
yum search */php<br />yum list php*

1	yum search */php<br />yum list php*

3. Find out what package a particular file belongs to:
yum provides /usr/bin/ssh

1	yum provides /usr/bin/ssh

4. Find useful information about a package:
yum info openssh

1	yum info openssh

5. Find the dependencies of a specific package:
yum deplist ImageMagick

1	yum deplist ImageMagick

6. List the software groups available for install:
yum grouplist

1	yum grouplist

7. Install a specific group of packages:
yum groupinstall "GNOME Desktop Environment"

1	yum groupinstall "GNOME Desktop Environment"

8. Install an RPM downloaded elsewhere using yum to solve dependencies:
yum localinstall package.rpm (<em>note: this command assumes you are in the same directory as package.rpm</em>)

1 2	yum localinstall package.rpm (<em>note: this command assumes you are in the same directory as package.rpm</em>)

9. Install a package with yum:
yum install php-mysql

1	yum install php-mysql

10. Remove a package with yum:
yum remove php-mysql <br />(<em>note: removing a package will also remove its dependencies but not dependencies that are orphaned.</em>)

1	yum remove php-mysql <br />(<em>note: removing a package will also remove its dependencies but not dependencies that are orphaned.</em>)

11. Clean out the yum cache of headers, metadata, downloaded packages, etc (man yum for more info):
yum clean all

1	yum clean all

12. Perform a system-wide update on all packages, including the kernel (note: kernel updates require a reboot to use the new kernel):
yum update

1	yum update

13. Useful Yum plugins:
To get a description of the function of each plugin and a description of what each plugin is capable of here is an example command: <strong>yum info yum-fastestmirror</strong> or <strong>yum --enablerepo=epel info yumex</strong> or <strong>yum --enablerepo=rpmforge info yumex</strong> yum yum-aliases yum-allowdowngrade yum-arch yum-basearchonly yum-changelog yum-cron yum-downloadonly yumex.noarch yum-fastestmirror yum-filter-data yumi.noarch yum-kernel-module yum-kmod yum-list-data yum-merge-conf yum-metadata-parser yum-priorities yum-protectbase yum-protect-packages yum-refresh-updatesd yum-security yum-skip-broken yum-tsflags yum-updateonboot yum-updatesd yum-upgrade-helper yum-utils yum-versionlock

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To get a description of the function of each plugin and a description of what each plugin is capable of here is an example command: <strong>yum info yum-fastestmirror</strong> or <strong>yum --enablerepo=epel info yumex</strong> or <strong>yum --enablerepo=rpmforge info yumex</strong>   yum yum-aliases yum-allowdowngrade yum-arch yum-basearchonly yum-changelog yum-cron yum-downloadonly yumex.noarch yum-fastestmirror yum-filter-data yumi.noarch yum-kernel-module yum-kmod yum-list-data yum-merge-conf yum-metadata-parser yum-priorities yum-protectbase yum-protect-packages yum-refresh-updatesd yum-security yum-skip-broken yum-tsflags yum-updateonboot yum-updatesd yum-upgrade-helper yum-utils yum-versionlock

Common Problems & Fixes

Description of common problems here, including links to known common problems if located on another site.

• http://wiki.centos.org

More Information

Any additional information or notes.

Disclaimer

We test this stuff on our own machines, really we do. But you may run into problems, if you do, come to #centoshelp on irc.freenode.net

Added Reading

• http://yum.baseurl.org/
• http://www.yum-extender.org/cms/modules/news/
• http://wiki.linux.duke.edu/YumUtils