Sunday, January 30, 2011


YUM (Yellow Dog Updater, Modified)

The Yellowdog Updater, Modified (YUM) is an open-source command-line package-management utility for RPM-compatible Linux operating systems and has been released under the GNU General Public License. It was developed by Seth Vidal and a group of volunteer programmers. Though yum has a command-line interface, several other tools provide graphical user interfaces to yum functionality.

Installing and Upgrading Packages with Yum

Install Packages, Upgrade packages and System upgrades
Update your package list
# yum check-update
Install a new package
# yum -y install compiz
-y flag allows unattended installation.
Update a single Package
# yum update gnome
Update several packages
# yum update nbserver nbweb-billing nginx
Update all installed packages
# yum update
Search for a package to install
# yum search ImageMagick
If you need a particular library, but don't know what package provides it, yum will find it
# yum provides compiz

Removing Packages through Yum

# yum remove compiz
# yum remove compiz gnome ImageMagick

Obtaining information of installed packages through Yum

# yum list compiz
# yum list | grep gnome
# yum info compiz
# yum list updates

Maintain Yum

# yum clean packages -- to delete all cached packages
# yum clean headers -- to force fresh download of package headers
# yum clean oldheaders -- to remove old headers that the system no longer needs
# yum clean all == remove cached packages and old headers, preserving all the current headers

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