How to disable blank screensaver on Ubuntu Server?

Prevent screen from turning off

You can run this command:

$ setterm -blank 0 -powerdown 0

Alternatively you can disable console blanking permanently using the following command:

# echo -ne "\033[9;0]" >> /etc/issue

Type setterm -blank 0 on any shell to disable blanking out of tty consoles.
Type sudo xset s 0 0

0 disables blanking, any value greater than 0 is the time in minutes. Default is 10.

To permanently enable this you can add this line to your ~/.bashrc config.