# Linux

> A Claude skill from ashish7802/awesome-api-skills.

- **Type:** Skill
- **Install:** `agentstack add skill-ashish7802-awesome-api-skills-linux`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [ashish7802](https://agentstack.voostack.com/s/ashish7802)
- **Installs:** 0
- **Category:** [AI & ML](https://agentstack.voostack.com/c/ai-and-ml)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [ashish7802](https://github.com/ashish7802)
- **Source:** https://github.com/ashish7802/awesome-api-skills/tree/master/skills/linux

## Install

```sh
agentstack add skill-ashish7802-awesome-api-skills-linux
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Linux Skill

> The free, open-source operating system that powers the internet.

## Ecosystem Graph Preview

```mermaid
graph LR
  linux["linux"]:::core
  classDef core fill:#f9f,stroke:#333,stroke-width:4px;
  linux -- "integrates with" --> docker
  linux -- "works well with" --> nginx
```

## Recommended Next Skills

- **[nginx](/skills/nginx)** (Score: 0.82)
  *Why: Direct relationship, Both are Infrastructure, Shared ecosystem (devops), Similar network profile*
- **[docker](/skills/docker)** (Score: 0.81)
  *Why: Direct relationship, Both are Infrastructure, Shared ecosystem (devops), Similar network profile*
- **[kubernetes](/skills/kubernetes)** (Score: 0.43)
  *Why: Both are Infrastructure, Shared ecosystem (devops), Can deploy to aws, Similar network profile*

## Quick Start
Linux is the foundation of modern cloud computing. Understanding the kernel, filesystem hierarchy, and shell commands is required for debugging production outages.

## Production Patterns
### systemd
For background services running directly on a VM (like an NGINX proxy or a Go binary), do not run them in a `tmux` session. Write a `systemd` service file to ensure the process starts on boot and automatically restarts on failure.

## Architecture & Scaling
### Everything is a file
In Linux, configuration, hardware devices (`/dev/sda`), and kernel parameters (`/proc/sys`) are represented as files. You can often read from or write to these files directly to monitor or alter system state.

## Error Recovery
When a server runs out of disk space (`No space left on device`), but `df -h` shows space available, you have likely run out of inodes. Check `df -i`. This happens when you have millions of tiny files (like session files or log chunks).

## Security Notes
Disable SSH password authentication (`PasswordAuthentication no`) in `/etc/ssh/sshd_config`. Exclusively use Ed25519 SSH keys. Use `fail2ban` to automatically block IPs that repeatedly fail authentication.

## References
- [Linux Docs](https://www.kernel.org/doc/html/latest/)

## Why use this skill
Use this when your agent works with **linux** — structured patterns beat pasted docs and prevent common hallucinations.

## AI pitfalls
- Hardcoding region or account IDs
- Missing IAM least-privilege on cloud resources
- Confusing similar service names (e.g. S3 vs CloudFront)

## Production checklist
- [ ] Secrets in environment variables, not source code
- [ ] Error handling and logging in place
- [ ] Rate limits and timeouts configured

## Related skills
- [`docker`](../docker/SKILL.md) — integrates with
- [`nginx`](../nginx/SKILL.md) — works well with

---
> **Last Verified:** 2026-07-02

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [ashish7802](https://github.com/ashish7802)
- **Source:** [ashish7802/awesome-api-skills](https://github.com/ashish7802/awesome-api-skills)
- **License:** MIT

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-ashish7802-awesome-api-skills-linux
- Seller: https://agentstack.voostack.com/s/ashish7802
- Browse the marketplace: https://agentstack.voostack.com/browse

---
Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.