Add repositories for yum

Add Dag RPM Repository for yum because that has many useful packages.

wget http://dag.wieers.com/rpm/packages/RPM-GPG-KEY.dag.txt
rpm - -import RPM-GPG-KEY.dag.txt
rm -f RPM-GPG-KEY.dag.txt
vim /etc/yum.repos.d/dag.repo

# create new file like below
[dag]
name=Dag RPM Repository for Red Hat Enterprise Linux
baseurl=http://apt.sw.be/redhat/el5/en/$basearch/dag/
gpgcheck=1
enabled=0

When you use DAG repository, Input yum command like below.

yum - -enablerepo=dag install [package]

Add repository Extra Package for Enterprise Linux (EPEL) that is provided from Fedora project.

wget http://download.fedora.redhat.com/pub/epel/RPM-GPG-KEY-EPEL
rpm - -import RPM-GPG-KEY-EPEL
rm -f RPM-GPG-KEY-EPEL
vim /etc/yum.repos.d/epel.repo

# create new file like below
[epel]
name=EPEL RPM Repository for Red Hat Enterprise Linux
baseurl=http://download.fedora.redhat.com/pub/epel/$releasever/$basearch/
gpgcheck=1
enabled=0

When you use EPEL repository, Input yum command like below.

yum - -enablerepo=epel install [package]

Add Remi Collent Repository

wget http://download.fedora.redhat.com/pub/epel/5/i386/epel-release-5-4.noarch.rpm
wget http://rpms.famillecollet.com/enterprise/remi-release-5.rpm
rpm -Uvh remi-release-5*.rpm epel-release-5*.rpm

When you use Remi repository, Input yum command like below

yum - -enablerepo=remi install [package]