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What are some resources for learning Linux in a structured manner?
(programming.dev)
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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https://www.lpi.org/our-certifications/lpic-1-overview/
Free PDFs, touches on the topics and actually shows you the commands, gives you exercises + further info. It will never be an end-all-be-all but it's a start if you're looking to learn something. It really all depends on what you're trying to get out of it I figure. If you're trying to be a sysadmin, then everybody else will have a different answer.