Bash Use Skill

Patterns for interactive bash commands, one-liners, and CLI usage.

When to Use

• Constructing shell commands
• Writing one-liners
• Interactive CLI usage
• Command debugging or improvement

Quick Reference

Quote paths with spaces:

bash
1cd "/path with spaces/dir"

Relative paths with rm:

bash
1rm -rf ./build  # Not $HOME/...

Chain commands:

bash
1cmd1 && cmd2 && cmd3  # Stop on failure
2cmd1; cmd2; cmd3      # Continue regardless

Command substitution:

bash
1result=$(command)  # Not `command`

Check command exists:

bash
1command -v jq &>/dev/null || echo "not found"

Output redirection:

bash
1command 2>&1        # Stderr to stdout
2command &>/dev/null # Suppress all

Process substitution:

bash
1diff <(cmd1) <(cmd2)

Full Guidelines

Read: ~/.claude/skills/code-implement/resources/loqui/languages/bash/reference/commands.md

Use Read tool to access (paths outside cwd require direct reads).

Anti-Patterns Checklist

• ✘ Unquoted paths with spaces
• ✘ Absolute paths with rm
• ✘ Using ; when && is needed
• ✘ Backticks instead of $()

Related Skills

• code-implement: Language-specific patterns (includes bash)
• code-test: TDD workflow