Linux Fundamental
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This document provides an overview of Linux fundamentals including concepts related to Ubuntu desktop and server, Linux distributions and architecture, the philosophy of Linux including the idea that everything is a file, and profiles of key figures like Linus Torvalds. It also summarizes common Linux skills and tools such as the bash shell, VIM text editor, SSH, directory structure, permissions, links, redirection, piping, cron jobs, iptables firewall, and containers versus virtual machines. References are provided for further reading.
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- 2. Concepts
- 3. Concepts - Ubuntu Desktop 10.04
- 4. Concepts - Ubuntu Server 14.04
- 7. Concepts - Linux distributions
- 9. Concepts - Philosophy Everything is a file • File Operations • Device I/O • Network I/O • OS Runtime System calls
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- 11. Concepts - Philosophy Rule of Composition • pipes • filters
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- 16. Bash
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- 19. Bash - Do whatever you want Who w last history … Running ps netstat … CPU/RAM free uptime top htop … Hardware lspci dmidecode ethtool … Perf iostat vmstat mpstat …
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- 21. Bash - Display all ENV variables $ env
- 24. $ sh -x filename Shell Script - Debug your script
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- 27. VIM Modes
- 29. SSH - OpenSSH
- 30. SSH - OpenSSH
- 31. SSH - cli: ssh/scp
- 32. SSH - cli: ssh/scp
- 33. SSH - cli: ssh/scp
- 34. SSH - client: iTerm2/XShell iTerm2 XShell
- 35. SSH - UseCases • ssh -D 8080 user@host • ssh -L 2121:host2:21 host3 • ssh -R 2121:host2:21 host1
- 39. permissions
- 44. Skills - Symbol/Hard Links
- 45. redirection
- 48. pipeline
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- 51. cron
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- 53. iproute2
- 55. iptables
- 56. Skills - iptables flow
- 59. manual
- 60. Skills - man $ man man
- 64. Docker on Linux
- 65. Bocker Docker implemented in around 100 lines of bash. https://github.com/p8952/bocker
- 67. Reference • https://en.wikipedia.org/wiki/Linux • https://en.wikipedia.org/wiki/Man_page • https://en.wikipedia.org/wiki/Linus_Torvalds • http://tldp.org/LDP/abs/html/textproc.html • https://en.wikipedia.org/wiki/Shell_(computing) • https://en.wikipedia.org/wiki/Bash_(Unix_shell) • https://en.wikipedia.org/wiki/Vim_(text_editor) • https://en.wikipedia.org/wiki/Secure_Shell • http://www.tldp.org/LDP/intro-linux/html/sect_03_01.html • https://en.wikipedia.org/wiki/Iproute2 • https://en.wikipedia.org/wiki/Iptables • https://en.wikipedia.org/wiki/Docker_(software) • https://github.com/p8952/bocker • http://www.jianshu.com/p/d3569613fcf8