When we ssh to the Linux server, If we see “X11-forwarding : x (disabled…)” as down below,

We can not use Graphical Interface of Installations or tools.

Therefore, we need to install “xorg-x11-server-Xorg, xorg-x11-xauth, xorg-x11-apps” packages.

There will be lot of dependencies for installing these packages, make sure you install all the packages using yum.

You can install the packages with the command below;

yum install xorg-x11-server-Xorg xorg-x11-xauth xorg-x11-apps –y

Once you done the installation, you need to exit and ssh again into the server

Then you will see “X11-forwarding : ✔” as down below,

Now, you can use XWindows/X11.

Exm – Firefox

Install firefox with “yum install firefox -y” command

You can open Firefox Browser with “firefox” command;

Run XWindows/X11 with Another User.

When we access to another user, X11/XWindows will not able to run as down below;

So, we can make his feature run, we can execute the following commands;

(Exm – we access root user to sarper1 user)

cp /root/.Xauthority /home/sarper1/.Xauthority

chown sarper1.sarper1 /home/sarper1/.Xauthority

export DISPLAY=”localhost:10.0″

Now, we can test with “xclock” command;