Cheatsheets

cronLearn how to schedule and automate tasks in Linux using cron jobs.

dockerCLI commands to build, run, manage containers, images, networks, volumes, compose, security, and swarm.

ffmpegComprehensive media conversion, video/audio encoding, filtering, and streaming command reference.

gitCommands for version control, branches, staging, history and undoing changes.

golangGo basics covering variables, control flow, collections, functions, structs, error handling, and concurrency.

jqSyntax for filtering, mapping, transforming, and restructuring JSON data from the command line.

markdownFormatting rules for text, lists, links, code blocks and other Markdown elements.

nanoShortcut keys for editing, navigating and managing text inside the Nano editor.

networkingCommon networking commands for interfaces, ports, DNS, routing, firewalls and connectivity troubleshooting.

pdfA quick reference guide covering PDF techniques and repeatable workflows.

postgresqlCommon SQL queries and commands for working with PostgreSQL databases and schemas.

pythonPython basics covering data types, control flow, functions and common operations.

regexPattern-matching expressions for extracting, replacing or validating text.

terminalFrequently used shell commands for file navigation, permissions, networking and more.

vimNavigation, editing and command shortcuts to work efficiently in Vim.