Introduction to Linux in HPC/Historical Background

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Linux Introduction Slides 17 - 23 (7 pages)

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   page 1: 
       Linux is an open source Unix-like OS (behaves similar to Unix).
           brief characteristics of Unix
       Linux is compatible to the POSIX standard.
           brief characteristics of POSIX
   page 2: 
       There are many Unix variants from different companies: Apple, Sun, IBM, HP and even Microsoft.
   page 3:
       Linux is developed along this line.
   page 4: 
       Historically there are two separate initiatives: GNU and Linux
       To be more precise: GNU/Linux
           Linux: OS kernel
           GNU: many user programs
       Therefore many distros
   page 5: 
       Distros can be divided into different categories.
           for server: RHEL, Fedora, CentOS
           for user: Debian, Ubuntu, Mint
           for workplace: Suse
           specialized distros: Kali Linux for security testing
   page 6: 
       HPC: all Top 500 supercomputers use Linux
       Popular desktop Linux distros: Ubuntu, Linux Mint ...
   page 7: 
       Which Linux distro should I use?
           It depends on your needs.
           Available software packages, support and maintenance are also important.

Quiz

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1. Are all Top 500 supercomputers using Linux in HPC?

	Yes
	No

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2. What does GNU stands for?

	A. GNU's Not Unix
	B. Geek Needed Unix
	C. General Unix
	D. General Unix
	E. None of the Above

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