I know some of you prefer to have Full Screen CLI especially to those who allergy to GUI, here's the simple tip, you can either click on the fluxbox menu->System->Run or type in the terminal -
shell>mrxvt +sb -name FullScreen
Here's the screenshot -
It will launch the full screen terminal, and the font size also becomes bigger in this case. However if you prefer to have small font size while having full screen terminal, you can run -
Then follow by pressing Control+Shift+f keys will do. Here's the screenshot -
Nice little trick but it does what you want.