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How to Configure & Use YUM


What is yum ?

Yum or Yellow dog Update, Modified is a package manager that was developed by Duke University to improve the installation of RPMs. Yum searches numerous repositories for packages and their dependencies so they may be installed together in an effort to alleviate dependency issues. Red Hat Enterprise Linux 5 uses yum to fetch packages and install RPMs.Yum uses a configuration file at /etc/yum.conf. Also refer yum(8) man page for more information.
There are multiple ways by which you can install a repository on the system and install/update packages :

– Add an existing repository

– Setup a new repository having packages populated from ISO’s downloaded from RHN

– Register the system on RHN and subscribe to the channels depending on the subscription you have.
How do I use it?

Here are some useful commands.

Install a package:
yum install package

Example: “yum install apache”

Remove a package:
yum remove package

Example: “yum remove apache”

Update a package:
yum update package

Example: “yum update apache”

Search for a package:
yum search package

Example: “yum search apache”
Find information about a package:
yum info package

Example: “yum info apache”
List packages containing a certain term:
yum list term

Example: “yum list apache”

Find what package provides a particular file:
yum whatprovides filename

Example: “yum whatprovides httpd.conf”



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  1. Roger August 13, 2009 Reply


    Thanks guys its really helpful i was trying to install eclipse packages in my fedora for so long and was always facing some or the other discripency error finally its working for me.

    Cheers !!!!

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