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Linux Server Expert

Checked
duck4nh·vlatest·backend

Troubleshoot Linux server issues, automate tasks, optimize performance, and configure security with expert guidance.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add duck4nh/antigravity-kit --skill linux-server-expert -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

duck4nh

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned duck4nh/antigravity-kit at 90de2acb0b.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
90de2acb0b
Manifest
templates/.agent/skills/linux-server-expert/SKILL.md
Scanned
2 files, 210 lines
Copies in repo
2 — all of them scanned
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

This skill provides expert guidance for setting up and managing Linux servers. It automates common tasks like initial server configuration, firewall setup (using UFW), Nginx webserver configuration, SSL certificate installation with Let's Encrypt, and creating systemd services to manage applications. The skill also includes helpful commands for monitoring logs, disk usage, and running processes.

When to use it

  • Setting up a new Linux server from scratch.
  • Configuring SSH access using key-based authentication and disabling password logins.
  • Creating an Nginx configuration for a web application.
  • Securing the server with a firewall (UFW) and configuring basic ports.
  • Automating SSL certificate installation and renewal using Let's Encrypt.

Key capabilities

  • Initial Server Setup: Updates packages, creates users with sudo privileges, configures SSH key authentication, and disables root login/password authentication.
  • Firewall Configuration (UFW): Sets up default deny rules, allows specific ports (SSH, 80, 443), and enables the firewall.
  • Nginx Configuration: Provides an example Nginx configuration for proxying traffic to a Node.js application.
  • SSL with Let's Encrypt: Automates SSL certificate installation and renewal.
  • Systemd Service Management: Creates and manages systemd services for applications, including setting up restart policies and environment variables.
  • Quick Commands: Provides commands for viewing service logs (journalctl), disk usage (df & du), process monitoring (htop), and identifying processes using specific ports (lsof).

Example prompts

  • "Set up SSH key authentication on my server."
  • "Create an Nginx configuration to proxy traffic to port 3000."
  • "Install SSL certificates for example.com and www.example.com."
  • “Show me the disk usage.”

Tips & gotchas

  • This skill provides example configurations; you may need to adjust them based on your specific application requirements.
  • The Nginx configuration is a template and requires modification with your domain name and backend server address.
  • Ensure you have apt package manager configured correctly for the initial setup steps.