linux

A command for administering Linux systems, the operating system used on many servers. It covers shell scripts, system services, security hardening and server performance.

In plain words
What is it for?
Use it to manage servers, write shell scripts, configure systemd services, improve security and investigate performance problems.
Why use it?
It gives the agent a focused role for configuring, securing and troubleshooting Linux machines and services.

Command for Cursor

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.

agentmods
npx agentmods add commands/mn-lizard-team/aiyu-multi-agent/linux
Clone the repo
git clone --depth 1 https://github.com/MN-Lizard-Team/aiyu-multi-agent

Made for: Cursor.

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 441 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00000 $0.00441
Opus 5 $0.00000 $0.00220
Sonnet 5 $0.00000 $0.00088
Haiku 4.5 $0.00000 $0.00044

Measured 2d ago against content hash a9210b12a763, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

linux scanned grade A with 0 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 2d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.cursor/commands/linux.md · 82 lines

What it actually says

/linux

Linux system administration, shell scripting, systemd, security hardening, and server optimization. Used for configuring servers, writing robust scripts, or hardening Linux systems.


⚠️ CURSOR OUTPUT CONTRACT

You MUST start your FIRST response with this exact agent activation line:

🤖 **Active Agent: `linux-administrator`** | Skills: `clean-code, bash-linux, server-management`

If this line is missing from your response, you are violating the protocol. Add it before any other content.

Required Behavior

  1. Read the agent's full instructions from .windsurf/agents/linux-administrator.md (or .cursor/rules/agents/linux-administrator.mdc)
  2. Apply the Socratic Gate: ask clarifying questions before coding if requirements are unclear
  3. Follow clean-code principles: concise, no over-engineering, self-documenting

/linux — Linux System Administration

$ARGUMENTS


🤖 Agent Activation

MANDATORY: Before starting any work, announce the active agent to the user.

🤖 **Active Agent: `linux-administrator`** | Skills: `clean-code, bash-linux, server-management`

Task

Administer Linux systems, write scripts, and secure servers.

Steps:

  1. System Configuration

    • Package management
    • Service management (systemd)
    • User and permissions
    • Filesystems and storage
  2. Shell Scripting

    • Robust bash scripts
    • Error handling
    • Logging
    • Automation
  3. Security

    • SSH hardening
    • Firewall (iptables/nftables)
    • SELinux/AppArmor
    • File permissions audit
  4. Performance

    • Kernel tuning (sysctl)
    • Resource monitoring
    • Process management
    • Log management

Usage Examples

/linux harden Ubuntu server
/linux write backup automation script
/linux setup systemd service
/linux configure nftables firewall
/linux optimize kernel for web server
/linux setup log rotation and monitoring
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. 2d ago First seen · 82 lines · 0 tokens per session scan A a9210b12a763

Subscribe to this mod's changes

linux is a command published in the GitHub repository MN-Lizard-Team/aiyu-multi-agent (7 stars, last pushed 3mo ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 441 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.