EPEL (Extra Packages for Enterprise Linux) is a repository of (as the name implies) A collection of packages not directly released with the given linux distribution release cycle. By default these packages are not available but all the wiring in the amazon AMI instance is already done all one needs to do is enable it. To do so check the two following ways.
Modify /etc/yum.repos.d/epel.repo.
Under the section marked [epel], change enabled=0 to enabled=1.
To temporarily enable the EPEL 6 repository, use the yum enablerpo option :
--enablerepo=epel.
Example
yum search iperf --enablerepo=epel
This will return :
That’s it short and sweet 😛