Bash Linux Patterns

What your AI can do with it

• Chain commands with ;, &&, ||, and pipe operators
• Find, read, and inspect files with ls, find, cat, head, tail, and grep
• Manage processes: list with ps aux, kill by PID, free a port with lsof
• Process text with sed, awk, cut, sort, uniq, and wc
• Make HTTP requests and downloads with curl and check ports with nc
• Write scripts using a template with set -euo pipefail and trap cleanup

Getting started

1. Have an agent environment that supports skills and allows the Read, Write, Edit, Glob, Grep, and Bash tools.
2. Add the bash-linux skill to the agent's available skills.
3. Work on a macOS or Linux system so the commands apply.
4. Ask the agent to perform terminal tasks; it uses the skill's patterns for commands, piping, and error handling.

What this skill tells your AI

The instructions your AI receives, as published by davila7/claude-code-templates in cli-tool/components/skills/development/bash-linux/SKILL.md and read by ahel’s review.

#!/bin/bash
set -euo pipefail  # Exit on error, undefined var, pipe fail

# Colors (optional)
RED='\033[0;31m'
GREEN='\033[0;32m'
NC='\033[0m'

# Script directory
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

# Functions
log_info() { echo -e "${GREEN}[INFO]${NC} $1"; }
log_error() { echo -e "${RED}[ERROR]${NC} $1" >&2; }

# Main
main() {
    log_info "Starting..."
    # Your logic here
    log_info "Done!"
}

main "$@"

if command -v node &> /dev/null; then
    echo "Node is installed"
fi

NAME=${1:-"default_value"}

while IFS= read -r line; do
    echo "$line"
done < file.txt

for file in *.js; do
    echo "Processing $file"
done

set -e          # Exit on error
set -u          # Exit on undefined variable
set -o pipefail # Exit on pipe failure
set -x          # Debug: print commands

cleanup() {
    echo "Cleaning up..."
    rm -f /tmp/tempfile
}
trap cleanup EXIT

Signals

GitHub stars

32k

Forks

4k

Last commit

Sep 2026

ahel review

• K1binfo
  installs-packages

Automated review, not a security audit. Ruleset v1+k2.

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Questions

When should the agent use this skill?

When working on macOS or Linux systems and running terminal commands, piping output, managing processes, or writing shell scripts.

Does it work on Windows?

The skill is written for Bash on Linux and macOS; it is intended for use on those systems.

What error-handling patterns does it include?

It covers set -euo pipefail to exit on errors, undefined variables, and pipe failures, plus trap cleanup and a script template with logging helpers.

Which tools does the skill use?

Its allowed tools are Read, Write, Edit, Glob, Grep, and Bash.