Open Source Cheat Sheets

Cheat Sheets	Description
Raspberry Pi Cheat Sheet	This Raspberry Pi cheat sheet covers what you need to boot your Pi, how to install the operating system, how to enable SSH and connect to WiFi, how to install software and update your system, and includes links for where to get further help.
Python Cheat Sheet	This cheat sheet rounds up a few built-in pieces to get new Python programmers started.
Markdown Cheat Sheet	This cheat sheet provides you with a solid baseline of common commands along with some of the most fun, and unique, rendering options specific to GitLab and GitHub.
Linux users and permissions Cheat Sheet	This Linux cheat sheet contains examples and commands to help you complete tasks related to permissions and users.
Bash	Become more efficient at the command line with this Bash cheat sheet containing time-saving tricks and shortcuts.
Linux commands Cheat Sheet	Use this handy Linux command cheat sheet for executing common tasks such as navigating files, installing software, and starting services.
SSH	This cheat sheet provides common command-line options and their configuration file equivalents for using SSH in ways beyond just simple remote login.
Linux Networking Cheat Sheet	In this downloadable PDF cheat sheet, get a list of Linux utilities and commands for managing servers and networks.
Microservices Cheat Sheet	This cheat sheet will help you build and manage high-scale microservices networks and solve the challenges of running services without fault that scale based on business demand.
Java Cheat Sheet	Get started using one of the most commonly used programming languages with this Java cheat sheet.
pip Cheat Sheet	Get to know the most useful pip commands to help you install, manage, and use Python software packages.
Blender Cheat Sheet	This cheat sheet focuses on the most commonly and frequently used hotkeys and mouse button presses, to help you get comfortably cruising along in Blender.
awk Cheat Sheet	Use this handy quick reference guide to the most commonly used features of awk.
Git Cheat Sheet	In our Git cheat sheet, learn the essentials, basic flow, basic branching, and important flags. Also learn how to work with a remote repository and of course, get more help.
Vim Cheat Sheet	In this cheat sheet, you'll learn how to use Vim just enough to get by for work or a project.
SELinux Cheat Sheet	Improve your skills managing and using Security-Enhanced Linux with this helpful guide.
FreeDOS Cheat Sheet	Use this FreeDOS cheat sheet to help you remember how to use the most common tools you'll need to know at the DOS command line.
Go Cheat Sheet	Download this practical cheat sheet for getting started with the Go programming language.
GNOME 3 Cheat Sheet	Download our GNOME 3 cheat sheet to speed up your productivity at the Linux desktop.
GIMP Cheat Sheet	Work faster and more efficiently using GIMP with this cheat sheet.
Linux firewall Cheat Sheet	Keep this firewall cheat sheet at your side to help strengthen your Linux security knowledge.
Linux window manager Cheat Sheet	Use this cheat sheet to help you get around i3 when you're starting.
Kubectl Cheat Sheet	Keep these 9 critical kubectl commands handy to help you with troubleshooting and managing your Kubernetes cluster administration.
Curl command cheat sheet	Download this cheat sheet featuring common curl uses and syntax, including an overview of using it to query an API.
Inkscape Cheat Sheet	Download our free cheat sheet to start using Inkscape today.
Jinja2 Cheat Sheet	Get the cheat sheet for Jinja2, a templating language for Python.
Emacs Cheat Sheet	Become an Emacs power user by learning the essential keyboard shortcuts demonstrated in this cheat sheet.
Lua Cheat Sheet	Get this two-page cheat sheet to learn Lua tips including syntax, data structures, important variables, and other helpful tricks.
Groff Macros Cheat Sheet	This cheat sheet lists how to use macros from three popular macro sets (me, ms and mm) to write papers and generate reports.
IRC Cheat Sheet	Whether you're a newcomer to IRC or an old pro, it's always helpful to have the commands you need at your fingertips.
Pandoc Cheat Sheet	This cheat sheet provides you with common options and handy syntax for frequently used conversions between all manner of digital formats with Pandoc.
Open source software alternatives Cheat Sheet	Quickly find alternatives to common proprietary software tools with this cheat sheet.
Containers Primer	Containers have become a hot topic among not just developers, but also enterprises. Learn the lingo and get the basics of Linux containers.

Source : opensource.com