install epel-release code example

Example 1: enable epel repo centos 7

cd /tmp
wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
ls *.rpm

Example 2: epel repo

yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm