Introduction to the GNU/Linux and UNIX command line

Some of these documents are used in our training sessions. They are available under the Creative Commons BY-SA license (see details and other documents).

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Thanks to people who sent comments and corrections: Michael Kerrisk, Jim Donelson, Tyler Le, Laurent Thomas, Jeff Ghislain, Leif Thande, Frédéric Desmoulins, Przemysław Ciesielski