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#shell (11)

Concepts (1)

Pipes

An operating-system primitive that streams one process's stdout into another's stdin, letting small composable tools build large data flows.
unix shell streaming ipc posix web-researched

Cheat sheets (10)

macOS CLI — Command Line Reference

Comprehensive macOS terminal reference covering file management, processes, networking, Homebrew, defaults, diskutil, launchctl, pbcopy/pbpaste, open, say, and power-user recipes.
macos osx terminal shell cli bash zsh brew homebrew system web-researched

Claude Code Hooks

Automate Claude Code lifecycle events with shell hooks — PreToolUse, PostToolUse, UserPromptSubmit, Notification, Stop, SubagentStop, and PreCompact. Covers configuration, environment variables, JSON I/O, exit codes, and blocking examples.
claude-code hooks automation lifecycle shell

Bash — Shell Scripting Reference

Comprehensive Bash scripting reference covering variables, parameter expansion, control flow, functions, arrays, string manipulation, arithmetic, traps, process substitution, and the Bash 5.3 in-shell command substitution forms.
bash shell scripting cli web-researched

fish — Friendly Interactive Shell

Comprehensive fish shell reference covering syntax, variables, functions, abbreviations, completions, config files, path management, prompt customization, Fisher plugins, fish 4.x features (Rust rewrite), and migration from bash/zsh.
fish shell terminal cli scripting zsh bash prompt functions config web-researched

shellcheck — Shell Script Linter

Catch quoting bugs, missing checks, and POSIX portability mistakes in shell scripts. Covers every flag, severity levels, inline directives, CI/pre-commit integration, and the most common rules.
shellcheck shell scripting linting bash cli tooling web-researched

subprocess — Spawning Processes

Run external commands from Python with subprocess. Covers run vs Popen, capture_output, streaming, pipes, timeouts, env/cwd overrides, and shlex quoting safety.
python stdlib shell

Bash Redirection & Pipes

stdin, stdout, stderr redirection operators and pipeline patterns in bash.
bash shell redirection pipes file-descriptors heredoc process-substitution tee fifo

Python One-Liners

Useful Python one-liners runnable directly from the shell with python -c or python -m. No file creation needed.
python oneliners cli shell snippets

macOS

Command-line tools, system utilities, Homebrew, Finder tricks, and macOS-specific development workflows.
macos osx terminal shell cli

Linux

Command-line tools, shell scripting, networking, system administration, and data extraction for Linux.
linux shell sysadmin