On this page you can find cheat sheets for various software development tools, such as PHP, Symfony, Composer, Docker, Kubernetes, Terraform, Git, and more. Each cheat sheet is available as a downloadable PDF file, which you can print and use for reference.
The cheat sheets on this page are available under the CC BY-ND 4.0 license. This means you can print them, copy them, share them with others, and use them at work, as long as you don't make changes and don't remove the copyright notice.
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Basic syntax, control structures, types, built-in functions, object-oriented features, operators, and more for PHP.
Console commands, form types, validation constraints, Twig functions, attributes, Symfony Flex, CLI usage, and more.
Overview with CLI options, attributes, assertions, test doubles, and example configuration for PHPUnit.
Dependency management reference for Composer with CLI commands, configuration, and version constraints.
Command reference for PHIVE (PHAR Installation and Verification Environment).
Do you work with PHP in larger codebases or legacy environments? I help development teams with architecture, improving performance, test automation, and modernizing existing applications.
Reference sheet for Docker with CLI and Compose commands, Dockerfile reference, best practices and more.
Command line reference for the kubectl CLI tool, listing commonly used commands and options.
Command line reference for Helm, a package manager for Kubernetes applications.
Reference sheet for Terraform listing common CLI commands and basic configuration syntax.
Linux reference with commands, file permissions, IO redirection, Bash shortcurts, directory structure, etc.
Command line reference for the aws CLI tool, with commands for IAM, EC2, EKS, RDS, S3, and more.
Reference sheet for DigitalOcean with doctl commands, resource types, Kubernetes authentication, and more.
Git workflow, CLI commands, and guidelines for writing good commit messages.
Reference sheet with HTTP syntax, methods, headers, and status codes.
Command line reference for GnuPG (GPG), including key management, encryption, signing, and more.
Command line reference for nmap, a network scanning tool, with various host discovery and port scanning options.
Target specification, common services, and wordlists for Hydra, a brute force login cracker.
Command line reference and injection techniques for sqlmap, an automatic SQL injection tool.
Command line reference for Trivy, an open source security scanning tool.