bash-linux

name	bash-linux
description	Bash/Linux terminal patterns. Critical commands, piping, error handling, scripting.
allowed-tools	Read, Write, Edit, Glob, Grep, Bash

Bash Linux Patterns

The terminal is a sharp knife.

Critical Operators

• && (Success), || (Fail), | (Pipe), ; (Seq).

Script Template

#!/bin/bash
set -euo pipefail
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
log_info() { echo -e "\033[0;32m[INFO]\033[0m $1"; }
main() {
    log_info "Starting..."
    # Logic
}
main "$@"

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🧠 Aletheia Reasoning Protocol (Shell Scripting)

1. Generator (Command Logic)

• Draft: "Find files -> loop -> grep -> delete".
• One-liner vs Script: "Too complex? Make a file".
• Tool Choice: "Awk vs Python?".

2. Verifier (Destruction Check)

• The "Run on Root" Test: "If rm -rf $VAR/ runs and $VAR is empty?".
• Dry Run: "Echo before rm".
• Exit Codes: "What if grep fails?".

3. Reviser (Hardening)

• Strict Mode: set -euo pipefail.
• Quoting: Quote "$VAR".

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🛡️ Security & Safety Protocol (Bash)

1. User Input: NEVER eval user input.
2. Sudoless: Avoid sudo in scripts.
3. Pipe Hygiene: Inspect before piping to bash.
4. Secrets: No hardcoded secrets. Env vars only.