The EASIEST (FIRST) WAY to access the X11 window system is to call up the initialization program xinit from the console. Then, the xinit analyzes the contents of $HOME/.xinitrc and starts commands entered there in sequence, analogously to shell scriptprocessing.
If the ~HOME/.xinitrc configuration file does not exist,xinit opens a command interpreter (xterm)...
xterm -geometry +1+1 -n login -display :0
* The -geometry +1+1 option has the effect that the leftcorner of the xterm window on the upper picture margin ispositioned one pixel down and to the right...
* The -n loginoption assignsthe name login to the window...
* The display: 0option causes xinitto present the window on the local X server...