Glad you made it to our little corner of the interwebs. We know that being a programmer can be tough. It's a constantly-changing landscape, and it can be hard to keep up. That's why we've put together this cheatsheet repository, so you can get all the info you need in one place.

We have a growing collection of cheatsheets covering popular programming languages and tools.

Each cheatsheet includes all the essential information you need to get started, with links to official documentation for further reading.

• Programming Languages

  • AWK
  • C
  • C++
  • C#
  • CoffeeScript
  • Crystal
  • D
  • Fortran
  • Go
  • Groovy
  • Java
  • JavaScript
  • Julia
  • Kotlin
  • Lisp
  • LOLCODE
  • Perl
  • PHP
  • Python
  • R
  • Ruby
  • Rust
  • Scala
  • Shell
    • Bash
    • Powershell
  • TypeScript
  • V
  • Web Technologies
    • JSON
    • SVG
    • XML
  • YAML

• Operating Systems

  • Linux
    • Arch Linux
    • CentOS
    • Debian
    • Fedora
    • Kali
    • RHEL
    • OpenSUSE
    • Ubuntu
    • Tools
      • df
      • git
      • grep
      • ls
      • rsync
      • ssh
      • tar
      • vim
  • Windows
    • Windows 95
    • Windows Server

• Security

  • Security Resources
  • Tools
    • Aircrack-ng
    • Nmap
    • OpenSSL

• Databases

  • Cassandra
  • DynamoDB
  • Elasticsearch
  • FirebirdSQL
  • IBM DB2
  • InfluxDB DB2
  • MariaDB
  • MongoDB
  • MySQL
  • Neo4j
  • Oracle
  • OrientDB
  • PostgreSQL
  • Redis
  • Snowflake
  • Solr
  • SQLite
  • SQL Server

I welcome contributions to this cheatsheet collection! My goal is to provide up-to-date and general information about various topics in a concise and simple manner.

When contributing, please keep the following guidelines in mind:

• Try to keep the cheatsheets up to date, including the latest versions of software and technologies.
• Keep the information as general as possible, avoiding specific configurations or custom setups.
• Emphasize the essential information and convey it concisely.
• Use clear and concise language, avoiding overly technical terms or jargon.

If you would like to contribute, please fork the repository, make your changes, and open a pull request. I appreciate your help in making this resource as helpful as possible!

If you like the work I do here, feel free to buy me a coffee ❤️, I appreciate all support!

This repository is licensed under the MIT License.

The MIT License is a permissive license that is short and to the point. It lets people do almost anything they want with your code as long as they provide attribution back to you and don’t hold you liable.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.