December 2018
Beginner
452 pages
12h 17m
English
Content preview from Learn Linux Shell Scripting - Fundamentals of Bash 4.4
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What is Linux?
Linux is a generic term that refers to different open source operating systems that are based on the Linux kernel. The Linux kernel was originally created by Linus Torvalds in 1991, and open sourced in 1996. A kernel is a piece of software that is designed to act as an intermediate layer between low-level hardware (such as the processor, memory, and input/output devices) and high-level software, such as an operating system. Apart from the Linux kernel, most Linux operating systems rely heavily on GNU project utilities; for example, the Bash shell is a GNU program. Because of this, Linux operating systems are referred to by some as GNU/Linux. The GNU project, where GNU stands for GNU's Not Unix! (a recursive acronym), is a collection ...
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