Ultimate list of cheatsheets for a SysAdmin
Last Updated: February 9th, 2023 6 min read Servers Australia
It is a truth universally acknowledged that there is a keyboard shortcut for everything. We’ve rounded up some of the best reference cards, cheatsheets and tutorials from command lines to file extensions, PowerShell to Subnet to ensure you’re never caught short again.
An A-Z of SysAdmin cheatsheets
.NET: https://dzone.com/refcardz/coredotnet
Access: https://www.masstechnology.com/media/4225/microsoft_access_cheatsheet.pdf
Apache: http://www.petefreitag.com/cheatsheets/apache/
Awk, Nawk, GNU Awk: http://www.catonmat.net/blog/awk-nawk-and-gawk-cheat-sheet/
Bash keyboard shortcuts: http://ss64.com/osx/syntax-bashkeyboard.html
BGP: http://packetlife.net/media/library/1/BGP.pdf
C++: http://cs.fit.edu/~mmahoney/cse2050/how2cpp.html
Command lines: http://www.commandlinefu.com/commands/browse
Common ports: http://packetlife.net/media/library/23/common_ports.pdf
Computer hardware: http://geekologie.com/image.php?path=/2009/07/22/computer-hardware-2.jpg
CSS: http://www.cheatography.com/davechild/cheat-sheets/css2/
DOS commands: http://web.csulb.edu/~murdock/dosindex.html
Drupal 7: https://dzone.com/refcardz/getting-started-drupal
EIGRP: http://packetlife.net/media/library/2/EIGRP.pdf
Excel: http://www.pcworld.com/article/2877236/excel-formulas-cheat-sheet-15-essential-tips-for-calculations-and-common-tasks.html
File extensions: http://whatis.techtarget.com/file-extension-list/A
First Hop Redundancy: http://packetlife.net/media/library/3/First_Hop_Redundancy.pdf
Flash: http://michaeldoyle.eu/blog/wp-content/uploads/2009/10/flash-cheat-sheet.pdf
GDB debugger: http://darkdust.net/files/GDB%20Cheat%20Sheet.pdf
Ghantoos Memo: http://ghantoos.org/memo/
Git: http://www.git-tower.com/blog/git-cheat-sheet/
Gmail: http://www.makeuseof.com/downloads/gmail-cheat-sheet.pdf
Gnome keyboard shortcuts: https://wiki.gnome.org/Design/OS/KeyboardShortcuts
Google search: https://support.google.com/websearch/answer/2466433?rd=1
htaccess: http://www.thejackol.com/htaccess-cheatsheet/
HTML4: http://www.cheatography.com/davechild/cheat-sheets/html4/
HTML5: http://websitesetup.org/html5-cheat-sheet/
IEEE 802.11 WLAN: http://packetlife.net/media/library/4/IEEE_802.11_WLAN.pdf
IEEE 802.1x: http://packetlife.net/media/library/5/IEEE_802.1X.pdf
IPsec: http://packetlife.net/media/library/6/IPsec.pdf
IPv4 Multicast: http://packetlife.net/media/library/7/IPv4_Multicast.pdf
IPv6: http://packetlife.net/media/library/8/IPv6.pdf
IS-IS: http://packetlife.net/media/library/9/IS-IS.pdf
JavaScript: http://www.cheat-sheets.org/sites/javascript.su/
Linux command line: http://www.tecmint.com/cheat-command-line-cheat-sheet-for-linux-users/
Linux Find command: http://foralllinux.blogspot.co.uk/2012/03/find-command-cheat-sheet.html
Linux keyboard shortcuts: https://www.linux.com/learn/tutorials/622258-best-linux-keyboard-shortcuts-
Firefox shortcuts: http://accessfirefox.org/Firefox_Keyboard_and_Mouse_Shortcuts.html
Linux/UNIX command list: https://www.sophos.com/en-us/support/knowledgebase/118879.aspx
Mac OS X shortcuts: http://osxdaily.com/2006/12/19/command-line-keyboard-shortcuts-for-mac-os-x/
Markdown: http://packetlife.net/media/library/16/Markdown.pdf
MediaWiki: http://www.cheat-sheets.org/saved-copy/Cheatsheet-mediawiki.pdf
mod_rewrite rules: http://www.cheatography.com/davechild/cheat-sheets/mod-rewrite/
MongoDB: https://blog.codecentric.de/files/2012/12/MongoDB-CheatSheet-v1_0.pdf
MySQL: http://cse.unl.edu/~sscott/ShowFiles/SQL/CheatSheet/SQLCheatSheet.html
Netcat: http://www.sans.org/security-resources/sec560/netcat_cheat_sheet_v1.pdf
Nmap: https://hackertarget.com/nmap-cheatsheet-a-quick-reference-guide/
Objective C: https://github.com/iwasrobbed/Objective-C-CheatSheet
OpenSSH: http://www.cheat-sheets.org/saved-copy/OpenSSH_quickref.pdf
OpenSSL: http://wiki.samat.org/CheatSheet/OpenSSL
Optical Carrier Levels (OCx): http://searchnetworking.techtarget.com/definition/Optical-Carrier-levels-OCx
Oracle DBA: http://cheatsheet4oracledba.blogspot.co.uk/
OSPF: http://packetlife.net/media/library/10/OSPF.pdf
Outlook: http://www.roberthalf.com/officeteam/blog/your-cheat-sheet-for-15-microsoft-outlook-shortcuts
Perl: http://juerd.nl/site.plp/perlcheat
Photoshop (2015): http://www.setupablogtoday.com/adobe-photoshop-keyboard-shortcuts/
PHP: http://www.blueshoes.org/en/developer/php_cheat_sheet
Physical terminations: http://packetlife.net/media/library/22/physical_terminations.pdf
Point-to-point protocol: http://packetlife.net/media/library/31/PPP.pdf
PostgreSQL: http://www.petefreitag.com/cheatsheets/postgresql/
PowerPoint: http://www.itbusinessedge.com/itdownloads/desktop-apps/microsoft-powerpoint-2013-cheat-sheet.html
PowerShell (basic): http://ramblingcookiemonster.github.io/images/Cheat-Sheets/powershell-basic-cheat-sheet2.pdf
PowerShell (competent): http://ramblingcookiemonster.github.io/images/Cheat-Sheets/powershell-cheat-sheet.pdf
PowerShell Active Directory: http://www.jonathanmedd.net/wp-content/uploads/2009/10/ADPowerShell_QuickReference.pdf
PowerShell modules: http://social.technet.microsoft.com/wiki/contents/articles/4308.popular-powershell-modules.aspx?Sort=MostRecent&PageIndex=1
Python: http://www.cogsci.rpi.edu/~destem/gamedev/python.pdf
RAID: https://www.aja.com/pdf/support/RAID_Cheat_Sheet.pdf
Regex: http://www.rexegg.com/regex-quickstart.html
REST security: https://www.owasp.org/index.php/REST_Security_Cheat_Sheet
Reverse Shell: http://pentestmonkey.net/cheat-sheet/shells/reverse-shell-cheat-sheet
RGB Hex colour chart: http://www.cheatography.com/davechild/cheat-sheets/rgb-hex-colour-chart/
RIP: http://packetlife.net/media/library/35/RIP.pdf
rpm: http://www.cyberciti.biz/howto/question/linux/linux-rpm-cheat-sheet.php
RubyOnRails: http://www.blainekendall.com/index.php/rubyonrailscheatsheet/
Scala: http://docs.scala-lang.org/cheatsheets/
Security (reverse-engineering malware): https://zeltser.com/reverse-malware-cheat-sheet/
Security incident survey: https://zeltser.com/security-incident-survey-cheat-sheet/
Sharepoint: http://www.customguide.com/cheat_sheets/sharepoint-2013-cheat-sheet.pdf
Spanning Tree: http://packetlife.net/media/library/11/Spanning_Tree.pdf
SQL Injection prevention: https://www.owasp.org/index.php/SQL_Injection_Prevention_Cheat_Sheet
SQL Server: http://www.cheatography.com/davechild/cheat-sheets/sql-server/
SQL: http://www.sql-tutorial.net/sql-cheat-sheet.pdf
Subnet: http://www.aelius.com/njh/subnet_sheet.html
Subversion: http://www.cheatography.com/davechild/cheat-sheets/subversion/
TCP/IP and tcpdump: http://www.sans.org/security-resources/tcpip.pdf
Terminal cheatsheet for Mac (basic): https://github.com/0nn0/terminal-mac-cheatsheet/wiki/Terminal-Cheatsheet-for-Mac-(-basics-)
Ubuntu: http://www.cheat-sheets.org/saved-copy/ubunturef.pdf
Vim commands: http://web.mit.edu/merolish/Public/vi-back.pdf
VLANs: http://packetlife.net/media/library/20/VLANs.pdf
Network Address Translation (NAT): http://packetlife.net/media/library/32/NAT.pdf
VOIP: http://packetlife.net/media/library/34/VOIP_Basics.pdf
Windows (error messages): http://searchenterprisedesktop.techtarget.com/definition/Error-messages-for-Windows-2000
Windows keyboard shortcuts: http://www.intelliadmin.com/index.php/2006/04/windows-keyboard-shortcuts-you-never-knew-existed/
Word: http://www.customguide.com/cheat_sheets/word-2013-cheat-sheet.pdf