In wordpress need to edit the themes itself to implement meta tag.

it is somewhere under wp-content/themes/<theme-name> /header.php

edit the part on the top

<meta name="description" content=" is a daily backlog of linux sysadmin and developer.All about self-discovery and learning process in life also being published openly" />
<meta name="keywords" content=" namran blog hawkeye hawk linux fedora centos tutorial howto adsense google system sysadmin awos aws weather software " />
<meta name="copyright" content="Creative Common (CC)" />

it is the small thing like this that make a big different after all… and yes with correct combination.