$ curl cheat.sh/
# startx
# The startx script is a front end to xinit that provides a nice user interface for running a single session of the X Window System.
# More information: <https://x.org/releases/X11R7.5/doc/man/man1/startx.1.html>.

# Start an X session:
startx

# Start an X session with a predefined depth value:
startx -- -depth value

# Start an X session with a predefined dpi value:
startx -- -dpi value

# Override the settings in the `.xinitrc` file and start a new X session:
startx /path/to/window_manager_or_desktop_environment

$
Follow @igor_chubin cheat.sh tldr