01
Linux Command Line
Essential Linux commands for navigation, files, permissions, processes, networking, and system administration.
Open Reference↗CYBERSECURITY QUICK REFERENCECheat Sheets
Cheat Sheets
for faster learning.
Keep essential cybersecurity commands, concepts, protocols, tools, and references close while learning and practicing.
Reference, not replacement
Cheat sheets are designed for quick revision. Understand the underlying concepts before relying on commands or tools.
⌕CTRL K
01 / CHEAT SHEET LIBRARY
Everything you need, at a glance.
Quick references covering the technologies and concepts used throughout the cybersecurity roadmap.
02
Networking Commands
Quick reference for inspecting interfaces, routes, DNS, connections, and network communication.
Open Reference↗03
Nmap
Reference for network discovery, service identification, and authorized security assessment workflows.
Open Reference↗04
HTTP & Web
Understand HTTP methods, status codes, headers, cookies, requests, responses, and common web concepts.
Open Reference↗05
Burp Suite
Quick reference for the major Burp Suite components used during authorized web application testing.
Open Reference↗06
Windows CMD
Useful Windows command-line utilities for administration, troubleshooting, system inspection, and security labs.
Open Reference↗07
PowerShell
Quick reference for PowerShell commands commonly used in Windows administration and security workflows.
Open Reference↗08
Python for Security
Useful Python concepts for automation, data processing, networking, and security scripting.
Open Reference↗09
Cryptography Basics
Quick reference for hashing, encryption, encoding, digital signatures, and common cryptographic concepts.
Open Reference↗10
SQL Security
Reference for SQL fundamentals, parameterization, database security concepts, and injection prevention.
Open Reference↗11
Blue Team Commands
Quick defensive references for processes, connections, logs, services, and system investigation.
Open Reference↗12
Bash Scripting
Essential Bash syntax for variables, conditions, loops, functions, pipes, redirection, and automation.
Open Reference↗02 / QUICK REFERENCE MAP
Find what you need quickly.
A simple map of the main areas covered by the cheat-sheet library.
Linux
FilesPermissionsProcessesNetworking
Networking
IPDNSPortsProtocols
Web Security
HTTPCookiesSessionsHeaders
Windows
CMDPowerShellServicesEvents
Security
ReconScanningAnalysisDefense
Programming
PythonBashRegexGit
03 / COMMAND REFERENCE
Learn the command. Understand the system.
Commands are only useful when you understand what the system is doing underneath them. Use these references while practicing inside authorized labs.
Practice in Labs→QUICK_REFERENCE.sh
$ whoami
security-student$ ip addr
network interfaces → addresses$ ss -tuln
listening services → ports$ nmap --help
authorized network assessment reference$ _
04 / EXTERNAL REFERENCES
Go deeper when necessary.
Use established security references when you need detailed documentation beyond a quick-reference sheet.
01
OWASP Cheat Sheet Series
↗02Application-security focused references covering authentication, authorization, injection, API security, cryptography, and many other topics.
SANS Cheat Sheets
↗Practical posters and quick-reference resources across offensive operations, DFIR, cloud security, and cyber defense.
Reference quickly.
Learn deeply.
Use cheat sheets during practice, then return to the roadmap to understand the bigger picture.