HTOP
Htop is an interactive real time process monitoring application for Linux/Unix like systems and also a handy alternative to top command, which is default process monitoring tool that comes with pre-installed on all Linux operating systems.
Install HTOP:
On CentOS you can install htop
via yum after installing Epel Repo:
yum -y install epel-release yum -y install htop
Run:
htop
Exit:
CTRL+C