bash-linux

bash-linux is a cursor rule for Cursor from MN-Lizard-Team/aiyu-multi-agent. It costs 26 tokens per session (1,304 once invoked), scanned B, original, Apache-2.0.

A reference for using Bash, the command-line shell commonly found on Linux and macOS. It covers commands, pipelines, files, processes, and error handling.

In plain words
What is it for?
Use it for terminal work such as finding files, reading logs, piping command output, checking disk usage, and managing processes.
Why use it?
It reduces mistakes when searching files, chaining commands, inspecting processes, or managing development tasks from a terminal.

Cursor rule for Cursor

Written for Cursor: installed under .cursor/. Also seen: positional $N argument; mentions Cursor.

Good fit Use it for terminal work such as finding files, reading logs, piping command output, checking disk usage, and managing processes.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/mn-lizard-team/aiyu-multi-agent/bash-linux
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/MN-Lizard-Team/aiyu-multi-agent

Made for: Cursor.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for bash-linux

README.md
[![agentmods](https://agentmods.dev/badge/rules/mn-lizard-team/aiyu-multi-agent/bash-linux.svg)](https://agentmods.dev/rules/mn-lizard-team/aiyu-multi-agent/bash-linux)
Your own site
<a href="https://agentmods.dev/rules/mn-lizard-team/aiyu-multi-agent/bash-linux"><img src="https://agentmods.dev/badge/rules/mn-lizard-team/aiyu-multi-agent/bash-linux.svg" alt="Measured on agentmods" height="20"></a>
Per session 26 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,304 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00026 $0.01304
Opus 5 $0.00013 $0.00652
Sonnet 5 $0.00005 $0.00261
Haiku 4.5 $0.00003 $0.00130

Measured 4d ago against content hash cd2a593b1bbf, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade B, and why

bash-linux scanned grade B with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Sends data to an external URLmediumData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

| POST JSON | `curl -X POST -H "Content-Type: application/json" -d '{"key":"value"}' URL` |

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

| Download | `curl -O https://example.com/file` |
.cursor/rules/skills/bash-linux.mdc · 203 lines

How it starts

The opening of the file, as written. The whole thing — 203 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill: bash-linux

Cursor Agent-Requested Rule — applied when AI determines relevance.


Bash Linux Patterns

Essential patterns for Bash on Linux/macOS.


1. Operator Syntax

Chaining Commands

Operator Meaning Example
; Run sequentially cmd1; cmd2
&& Run if previous succeeded npm install && npm run dev
|| Run if previous failed npm test || echo "Tests failed"
| Pipe output ls | grep ".js"

2. File Operations

Essential Commands

Task Command
List all ls -la
Find files find . -name "*.js" -type f
File content cat file.txt
First N lines head -n 20 file.txt
Last N lines tail -n 20 file.txt
Follow log tail -f log.txt
Search in files grep -r "pattern" --include="*.js"
File size du -sh *
Disk usage df -h

3. Process Management

Task Command
List processes ps aux
Find by name ps aux | grep node
Kill by PID kill -9 <PID>
Find port user lsof -i :3000
Kill port kill -9 $(lsof -t -i :3000)
Background npm run dev &
Jobs jobs -l
Bring to front fg %1

4. Text Processing

Core Tools

Tool Purpose Example
grep Search grep -rn "TODO" src/
sed Replace sed -i 's/old/new/g' file.txt
awk Extract columns awk '{print $1}' file.txt
cut Cut fields cut -d',' -f1 data.csv
sort Sort lines sort -u file.txt
uniq Unique lines sort file.txt | uniq -c
wc Count wc -l file.txt

5. Environment Variables

Task Command
View all env or printenv
View one echo $PATH
Set temporary export VAR="value"
Set in script VAR="value" command
Add to PATH export PATH="$PATH:/new/path"

Read the full file on GitHub · 203 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 203 lines · 26 tokens per session scan B cd2a593b1bbf

Subscribe to this mod's changes

bash-linux is a cursor rule published in the GitHub repository MN-Lizard-Team/aiyu-multi-agent (7 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 26 tokens to every session and 1,304 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it B with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.