Best Linux Cheat Sheets

Linux Reference Card – Great reference published on FOSSwire website
One page Linux Manual – Great one page reference to the most popular Linux commands
Unix Tool Box – An incredibly exhaustive reference for all things Linux.
Treebeard’s Unix Cheat Sheet – A great reference with Dos comparisons
Terminal Shortcuts – Cheat sheet for the most common terminal shortcuts
More Terminal Shortcuts – More shortcuts for history and X

Linux Security Quick Reference Guide – An awesome security checklist reference
IP Tables – If you are interested in Linux firewalls this is a must have
TCPDump – Great cheat sheet to an awesome security tool
Wireshark Filters – An awesome list of filters for the best packet sniffing utility
IP Access Lists – Cheat sheet for IP Access Lists
Common Ports – In case you don’t have all common ports memorized
netcat – Reference to the swiss army knife of networking

Linux Admin Quick Reference – PDF cheat sheet of common Linux administration tasks
Crontab Reference – Also see Learning Cron by Example

Vi Cheat Sheet – Who doesn’t love Vi/Vim. Also check out my guest post on Vim.
Concise Vim Cheat Sheet
awk nawk and gawk cheat sheet – Awesome awk sheet, also check out awk is a beautiful tool
Sed Stream Editor Cheat Sheet – Savvy Sed
Screen Quick Reference – Quick reference to a must have screen emulator, Also check out Introduction to GNU Screen
Screen Terminal Emulator Cheat Sheet – PDF cheat sheet for screen
Vi/Vim Cheat Sheet – Nice vim/vi keyboard layout reference

Online Man Pages – The ultimate cheat sheet repository. Also use the ‘man‘ command.

Source
http://www.nixtutor.com/linux/all-the-best-linux-cheat-sheets/

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