If you chose CentOS 8 / RHEL 8 to be installed as a minimal server at the time of installation, you would only get a command-line mode. Install Gnome GUI on CentOS 7 – License Agreement. Download gnome-classic-session-3.28.1-11.el7.noarch.rpm for CentOS 7 from CentOS repository. [root@dlp ~]# echo "exec gnome-session" >> ~/.xinitrc [root@dlp ~]# startx : GNOME Shell started. Share ( Déconnexion /  Simple and Easy to Access all your basic tasks; Helps in making more productivity Several days ago, I reviewed CentOS 8.Overall, the whole thing went well, but there were some snags along the way. With three simple commands you can install GNOME, set it up to start a graphical login, and reboot. To override that setting for a specific user, you need to modify the user's account service in the /var/lib/AccountsService/users/ username file. 2014/07/10 : The default GNOME Desktop of CentOS 7 starts with classic mode but if you'd like to use GNOME Shell, set like follwos. Install CentOS-7 - … extensions gnome shell Installations. Top.