A long, long time ago when I was mastering Linux I created three cheat sheets about GNU fileutils, GNU shellutils and GNU textutils. I kept keep them in front of me at all times and I quickly memorized which commands did what. A few days ago I remembered about them and decided to publish them on my blog but it turned out fileutils, shellutils and textutils had been merged in GNU coreutils in 2003;
![GNU Coreutils Cheat Sheet](https://cdn-ak-scissors.b.st-hatena.com/image/square/deedb67dac356f5b6b3e505320e371d9688b51b1/height=288;version=1;width=512/https%3A%2F%2Fcatonmat.net%2Fimages%2Fcatonmat-preview-image.png)