srnnkls/bash

Bash Use Skill

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

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When to Use

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

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Quick Reference

Quote paths with spaces:

cd "/path with spaces/dir"

Relative paths with rm:

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

Policy: Always use relative paths with rm commands. Absolute paths involving critical directories ($HOME, /, etc.) are blocked by policy.

# ✗ WRONG: Absolute path involving $HOME - blocked
rm -rf $HOME/project/build

# ✓ CORRECT: Relative path
rm -rf ./build

Chain commands:

cmd1 && cmd2 && cmd3  # Stop on failure
cmd1; cmd2; cmd3      # Continue regardless

Command substitution:

result=$(command)  # Not `command`

Check command exists:

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

Output redirection:

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

Process substitution:

diff <(cmd1) <(cmd2)

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Full Guidelines

Read: ~/.claude/skills/loqui/reference/loqui/languages/bash/reference/commands.md

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

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Anti-Patterns Checklist

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

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Related Skills

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