bash-linux

Bash-Linux is a Claude Code reference skill that packages essential Bash and Linux/macOS terminal patterns into a compact cheat-sheet. It solves the everyday problem of recalling correct command syntax and safe scripting idioms by giving Claude a curated reference for operators, file operations, process management, text processing, environment variables, networking, and error handling when working on Unix-like systems.

The skill is organized as a series of quick-reference tables and short code snippets. It covers command-chaining operators, common file commands, process inspection and termination, core text tools (grep, sed, awk, cut, sort, uniq, wc), environment-variable handling, and basic networking with curl and nc. It includes a reusable script template that turns on strict mode (set -euo pipefail), defines logging helpers, and resolves the script directory, plus common patterns such as checking whether a command exists, default variable values, reading files line by line, looping over files, and using trap for cleanup. A comparison table maps PowerShell equivalents to Bash for users switching between shells, and a dedicated error-handling section explains the strict-mode options and cleanup traps.

It targets developers, DevOps engineers, and anyone scripting on Linux or macOS who wants concise, correct patterns and safer-by-default scripting habits. Although the skill's frontmatter self-labels its risk as critical, the content is purely educational reference material: it documents standard commands (including force-kill and temp-file cleanup) as examples rather than executing any destructive automation, and it emphasizes defensive practices like strict mode, variable quoting, and cleanup traps.