This is an awesome post and introduction to linux-based (debian/ubuntu) systems and commands. I have used both Windows and Linux in the past. I tried quite a few linux versions over the years: mandrake, mandriva, opensuse, fedora, Ubuntu and now Mint.
Keep going with this series of explaining and promoting open-source systems. I think that they are very helpful. Your english writing is getting much better too. Cheers :)
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