Quick_references

# Many many quick references
http://www.cheat-sheets.org
http://www.cheatography.com/
http://whatis.techtarget.com/reference/Our-Favorite-Cheat-Sheets

# Windows command line reference
http://ss64.com/nt/
https://www.sans.org/security-resources/sec560/windows_command_line_sheet_v1.pdf

# Win server 2k3 reference
https://technet.microsoft.com/en-us/library/cc778084%28WS.10%29.aspx

# AD Powershell
http://www.jonathanmedd.net/wp-content/uploads/2009/10/ADPowerShell_QuickReference.pdf

# Mostly windows+AD
https://www.gfi.com/blog/the-sys-admins-compendium-of-cheat-sheets-quick-reference-cards-and-one-pagers/

# Includes CISCO
https://www.gfi.com/blog/the-sys-admins-other-compendium-of-cheat-sheets-quick-reference-cards-and-one-pagers/

# MySQL
https://neverendingsecurity.wordpress.com/2015/04/13/mysqladmin-commands-cheatsheet/
http://www.mysqltutorial.org/mysql-cheat-sheet.aspx
http://cse.unl.edu/~sscott/ShowFiles/SQL/CheatSheet/SQLCheatSheet.html

# Networking
http://packetlife.net/library/cheat-sheets/

# Arp Debian
http://askubuntu.com/questions/22998/add-static-arp-entries-when-network-is-brought-up

# Misc
http://www.commandlinefu.com/commands/browse