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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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Then I would look for linux sysadmin resources, f.e.
https://github.com/shiiaii/fork-david-linux-administration-books/blob/main/Practical_Linux_System_Administration.pdf
Or wait for a udemy offer (Should never have to buy for full price, offers at 13-15 euro comes more often than not) and grab an admin course there if you want video lectures, f.e.
https://www.udemy.com/course/master-linux-administration/