Cheat sheet of various commands of Linux

There are mountains of commands on Unix and Linux, but it is hard to learn all of them. Therefore, I do not remember much details other than frequently used commands, but in such a case I can casually glance at such a feeling like "Oh this," this cheat sheet like a cheat sheet. It is recommended from Linux beginner to beginner and intermediate rank widely.

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FOSSwire >> Unix / Linux Command Cheat Sheet

Creative CommonsSince it is a PDF file distributed under license, it may be useful if you print it and keep it at hand. I do not need things like the reference book, but it is perfect for those who say ....