[Discover] GNU/Linux, Windows, Oracle, OS X cheatsheets http://www.ss64.com/index.html
(windows oracle reference gnu/linux) 
[Discover] Linux Command Directory: Index http://www.oreillynet.com/linux/cmd/ (commands reference linux directory)
[Discover] The Windows XP Command Line, Batch Files, and Scripting- Using the Command Shell http://commandwindows.com/index.html (windows tips howto tutorial)
[Discover] How can I run a control panel applet from the command line? http://www.windowsitpro.com/Article/ArticleID/14854/14854.html (win firewall security commands)
[Discover] The Armchair Politician :: Technical http://www.touset.org/blog/archives/category/technical/ (linux commands)
[Discover] Linux Man Pages(-) http://www.linuxmanpages.com/ (reference documentation linux manual)
[Discover] Dark Age http://www.darkage.co.uk/ (remote tools support network)
[Discover] The Command Prompt in Windows XP- Introduction http://commandwindows.com/command1.htm (windows command tutorial programming)
[Discover] GNU/Linux Command-Line Tools Summary - Working with files and folders http://linux.about.com/od/lts_guide/a/gdelts27.htm (useful tutorial linux toread)
[Discover] Windows XP Commands http://www.ss64.com/nt/ (windows cmd reference cli)
[Discover] Linux Command Directory: Index http://www.oreillynet.com/linux/cmd/ (commands reference linux directory)
[Discover] The Windows XP Command Line, Batch Files, and Scripting- Using the Command Shell http://commandwindows.com/index.html (windows tips howto tutorial)
[Discover] How can I run a control panel applet from the command line? http://www.windowsitpro.com/Article/ArticleID/14854/14854.html (win firewall security commands)
[Discover] The Armchair Politician :: Technical http://www.touset.org/blog/archives/category/technical/ (linux commands)
[Discover] Linux Man Pages(-) http://www.linuxmanpages.com/ (reference documentation linux manual)
[Discover] Dark Age http://www.darkage.co.uk/ (remote tools support network)
[Discover] The Command Prompt in Windows XP- Introduction http://commandwindows.com/command1.htm (windows command tutorial programming)
[Discover] GNU/Linux Command-Line Tools Summary - Working with files and folders http://linux.about.com/od/lts_guide/a/gdelts27.htm (useful tutorial linux toread)
[Discover] Windows XP Commands http://www.ss64.com/nt/ (windows cmd reference cli)