There is so much information out there that it is impossible to remember everything you have read or came across. That’s why bookmarking is so important; hundreds of them in the form of cheat sheets, quick reference cards, one-pagers, pensieves, or anything you want to call them. There are some really smart people out there who have put together some fantastic resources to help you quickly find what you need.
When you only need to know how to do something quickly – not the reasoning behind it or the theory – and you don’t have time to read a 2,000-word whitepaper on how to put together a one-line command, you need a cheat sheet.
That’s why we’ve created this compendium of some of the best of these resources for you to use, save, or bookmark. Many are in PDF format, some are text, and a few are online only, but they are chock-full of great information.
PowerShell is the de facto administrative interface for Microsoft operating systems and applications. Even when you are running in a GUI, there’s PowerShell performing all the work in the background, so knowing PowerShell is vital. Cheat sheets abound online. Here’s a set of the best of the best.
Windows PowerShell 4.0 and Other Quick Reference Guides
Windows PowerShell 3.0 and Server Manager Quick Reference Guides
Aptillon Windows PowerShell Cheat Sheet
Windows PowerShell Quick Reference
Windows PowerShell 2 For Dummies
PowerShell Quick Reference v3.03 by Dimitri Koens
Windows PowerShell 3.0 Language Quick Reference
PowerShell Integrated Scripting Environment 3.0
Windows PowerShell 3.0 Examples
Powershell: Regex Cheat Sheet
PowerShell for Exchange 2010–Cheat Sheet
Exchange Shell Quick Reference (2007)
In addition, there are 11 great monthly newsletters from PowerShell.com that, while not exactly in “cheat sheet” format, are well worth the download. See the complete collection at http://powershell.com/cs/media/28/default.aspx
At the heart of every enterprise is Active Directory. Being able to manage it from the command line makes scripting and automation much more direct and efficient.
Active Directory PowerShell Quick Reference
Brakertech Active Directory Cheat Sheet
Microsoft Active Directory Ports cheat sheet
Windows Logging Cheat Sheet
Active Directory Auditing
Other Microsoft cheat sheets
Here’s a mixed bag of other cheat sheets and references for various Microsoft products, including user and server applications.
SharePoint 2013 Cheat Sheet
SharePoint 2010 Cheat Sheet
Office 365 Cheat Sheet for users
Windows Server 2012 Windows PowerShell Web Access
Windows command line reference
SQL Server Cheat Sheet
SQL Data Types and Conversion, Functions, and Creation
Apple cheat sheets
Cheat sheets do not only exist for Microsoft products, but there are a handful for Apple.
iPad Cheat Sheet
Linux and Unix
Linux and Unix also have a collection of cheat sheets online.
VI/VIM Graphical Cheat Sheet
OpenSSH Quick Reference
Rosetta Stone for UNIX
AWK Cheat Sheet
Ed Unix Text Editor Cheat Sheet
Here’s a short list for networking engineers and sys admins. PacketLife has more than a dozen all on one page.
Protocol encapsulation chart from Wildpackets
PacketLife.net’s huge collection of protocol and networking cheat sheets
NMAP Cheat Sheet
SANS Institute TCP/IP Reference
And since most of us have to do some web work from time to time, here are some cheat sheets for those of us who are not devs, but still have to bang out some limited code or like to customize our blogs.
HTML Cheat Sheet
HTML / XHTML Quick Reference
HTML Codes Cheat Sheet
HTML Color Codes
WordPress Theme Cheat Sheet
WordPress Helper Sheet
HTTP/1.1 Status Codes
HTML Cheat Sheet
HTML Character Entities Cheat Sheet
RGB Hex Colour Chart
If you use VMware for virtualization, there are some pretty handy references as well.
PowerCLI Quick Reference
vSphere 5.0 vReference Card
vSphere 4.1 vReference Card
esxtop & vscsiStats creditcard sized reference
ESX3 vmreference card
Just a few more things
You will need a login but Dzone has a huge collection of cheat sheets for sys admins. Certainly worth exploring if you want to sign up.
Expert cheat sheets and tutorial guides for developers
With all the great cheat sheets posted online, this list is certainly not exhaustive. Do you have any favorites? Leave a comment with a link below and let us know what your go-to resources are.
For more cheet sheets for sys admins check out: http://www.gegeek.com/
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