centos 5,6,7 How can I use these extra packages?
<h2>http://fedoraproject.org/wiki/EPEL<br> <span class="mw-headline" id="How_can_I_use_these_extra_packages.3F"></span></h2><h2><span class="mw-headline" id="How_can_I_use_these_extra_packages.3F"> How can I use these extra packages? </span></h2>
<p>EPEL has an 'epel-release' package that includes gpg keys for package
signing and repository information. Installing this package for your
Enterprise Linux version should allow you to use normal tools such as
yum to install packages and their dependencies. By default the stable
EPEL repo is enabled, there is also a <a href="http://fedoraproject.org/wiki/EPEL/testing" title="EPEL/testing">'epel-testing' repository</a> that contains packages that are not yet deemed stable.
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<div style="float: left; margin-left: -40px;"><a href="http://fedoraproject.org/wiki/File:Idea.png" class="image"><img alt="Idea.png" src="http://fedoraproject.org/w/uploads/a/a4/Idea.png" height="35" width="35"></a></div>
<div><b>NOTE for RHN users</b><br>You need to also enable the '<b>optional'</b> repository to use EPEL packages as they depend on packages in that repository. This can be done by enabling the RHEL optional <a class="external text" href="https://access.redhat.com/kb/docs/DOC-11313">subchannel</a> for RHN-Classic. For certificate-based subscriptions see <a class="external text" href="https://access.redhat.com/site/documentation/en-US/Red_Hat_Subscription_Management/1/html/RHSM/entitlements-and-yum.html#supplementary-repos">Red Hat Subscription Management Guide</a></div>
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<div style="float: left; margin-left: -40px;"><a href="http://fedoraproject.org/wiki/File:Idea.png" class="image"><img alt="Idea.png" src="http://fedoraproject.org/w/uploads/a/a4/Idea.png" height="35" width="35"></a></div>
<div><b>NOTE for CentOS users</b><br>You can install EPEL by running <b>yum install epel-release</b>. The package is included in the CentOS Extras repository, enabled by default.</div>
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<p>If you are running an EL7 version, please visit here to get the newest 'epel-release' package for EL7: <a class="external text" href="http://download.fedoraproject.org/pub/epel/7/x86_64/repoview/epel-release.html">The newest version of 'epel-release' for EL7</a>
</p><p>If you are running an EL6 version, please visit here to get the newest 'epel-release' package for EL6: <a class="external text" href="http://download.fedoraproject.org/pub/epel/6/i386/repoview/epel-release.html">The newest version of 'epel-release' for EL6</a>
</p><p>If you are running an EL5 version, please visit here to get the newest 'epel-release' package for EL5: <a class="external text" href="http://download.fedoraproject.org/pub/epel/5/i386/repoview/epel-release.html">The newest version of 'epel-release' for EL5</a>
</p><p>You can verify these packages and their keys from the Fedora project's keys page: <a class="external free" href="https://fedoraproject.org/keys">https://fedoraproject.org/keys</a>
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