Here is a quick and easy way to keep those popular CLI commands available for reference whenever you need them.
Note: First wallpaper is in .png format (1280*1024 pixels).
Two modified versions of this wallpaper have also been created by Lifehacker readers. The first is from rmmccann (1920*1200 pixels, .jpg format)…
And the second one is from rwcorbett (2560*1900 pixels, .png format).
Handy wallpaper for basic linux commands [Tux Training via Lifehacker]