Administering Linux
Systemd, process, filesystem, network and performance reference for Linux server admins
Test report
- Verdict
- Tested · Works
- Score
- Tested
- Jul 21, 2026
- Environment
- Claude Code 2.x (agent harness)
- Upstream re-checked
- Aug 10, 2026 · a4680b9
Fetched SKILL.md and spot-checked 3 referenced paths via raw GitHub — backup.sh, sshd_config.hardened, and references/systemd-guide.md all returned HTTP 200; backup.sh uses set -euo pipefail with no curl|sh/base64/exfil. Trigger phrasings judged: SHOULD (all loaded) — "nginx keeps crashing on prod, set up auto-restart and check logs", "write a hardened systemd unit to run my Go binary as a service", "server load average is 15, find what's eating CPU"; should NOT (correctly skipped) — "write a Dockerfile and deploy to Kubernetes" (skill explicitly defers container orchestration), "set up a GitHub Actions CI/CD pipeline" (defers to building-ci-pipelines). 5/5. Output test: task = hardened systemd service + deploy for a Node/Go web app. Baseline unit had only User/WorkingDirectory/ExecStart/Restart=always; skill-followed unit added a Security hardening block (PrivateTmp, NoNewPrivileges, ProtectSystem=strict, ReadWritePaths), Requires=postgresql ordering, ExecReload, Restart=on-failure+RestartSec, and a deploy sequence creating a locked no-shell system user (useradd -r -s /bin/false) plus daemon-reload — concretely more production-safe than baseline.
Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works
- Installs cleanly 5/5
- Triggers reliably 5/5
- Output vs. baseline 7/10
- Docs & honesty 5/5
What Administering Linux does
A Linux system administration reference skill covering systemd services and timers, process and log management, filesystems, networking, firewalls, SSH hardening, and performance tuning. Triggers when deploying applications to Linux servers, writing systemd unit files, diagnosing slow or failing production systems, or managing users and security. Ships hardened templates (sshd_config, systemd units, backup script) and six deep-dive reference guides.
How to install Administering Linux
git clone --depth 1 https://github.com/ancoleman/ai-design-components.git /tmp/administering-linux-src
mkdir -p ~/.claude/skills
cp -R /tmp/administering-linux-src/skills/administering-linux ~/.claude/skills/administering-linux
# SKILL.md lands at ~/.claude/skills/administering-linux/SKILL.md
# No external deps, API keys, or build step. References + examples come along in the copied dir.
# The skill is knowledge/template only — commands it teaches (systemctl, journalctl, etc.) run on a real Linux host you supply.
Skills live in ~/.claude/skills/ (global) or .claude/skills/
(per-project). Restart Claude Code after installing.
Commands — how to trigger Administering Linux
-
/administering-linuxSystemd, process, filesystem, network and performance reference for Linux server admins
It also activates on plain-language prompts like these:
-
Diagnose why this systemd service keeps failing -
Optimize server performance under high load -
Troubleshoot this production networking issue
Frequently asked questions
- Is the Administering Linux skill free?
- Yes. The skill itself is free from ancoleman/ai-design-components. SkillProof publishes the install command and an independent test verdict at no cost.
- Does Administering Linux work with Claude Code?
- We tested it with Claude Code 2.x (agent harness) on Jul 21, 2026. Verdict: Tested · Works. Fetched SKILL.md and spot-checked 3 referenced paths via raw GitHub — backup.sh, sshd_config.hardened, and references/systemd-guide.md all returned HTTP 200; backup.sh uses set -euo pipefail with no curl|sh/base64/exfil. Trigger phrasings judged: SHOULD (all loaded) — "nginx keeps crashing on prod, set up auto-restart and check logs", "write a hardened systemd unit to run my Go binary as a service", "server load average is 15, find what's eating CPU"; should NOT (correctly skipped) — "write a Dockerfile and deploy to Kubernetes" (skill explicitly defers container orchestration), "set up a GitHub Actions CI/CD pipeline" (defers to building-ci-pipelines). 5/5. Output test: task = hardened systemd service + deploy for a Node/Go web app. Baseline unit had only User/WorkingDirectory/ExecStart/Restart=always; skill-followed unit added a Security hardening block (PrivateTmp, NoNewPrivileges, ProtectSystem=strict, ReadWritePaths), Requires=postgresql ordering, ExecReload, Restart=on-failure+RestartSec, and a deploy sequence creating a locked no-shell system user (useradd -r -s /bin/false) plus daemon-reload — concretely more production-safe than baseline.
- What is the Administering Linux SkillProof Score?
- 8.8/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 7/10, docs & honesty 5/5.
- How do I install Administering Linux?
- Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
- Can I use Administering Linux with Cursor, Copilot, Gemini CLI, Codex or other AI tools?
- The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.