How to install htop iftopCentOS 7.x

how to install htop iftop .... Commands to install EPEL repo on a CentOS Linux and RHEL 7.x

1. Open a shell prompt.
2. Or login to a host called server1 using ssh client.
3. Install epel using the following command: yum -y install epel-release
4. Refresh repo by typing the following commad: yum repolist

How to install RHEL EPEL repository on Centos 7.x or RHEL 7.x

The following instructions assumes that you are running command as root user on a CentOS/RHEL 7.x system and want to use use Fedora Epel repos.

Method #1: Install Extra Packages for Enterprise Linux repository configuration (recommended)

Just type the following yum command on a CentOS 7 or RHEL 7:

 
sudo yum install epel-release