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.
npx skills add HermeticOrmus/linux-sysadmin-skills --skill sysadmin-diagnosegit clone --depth 1 https://github.com/HermeticOrmus/linux-sysadmin-skillsWrote 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.
[](https://agentmods.dev/skills/hermeticormus/linux-sysadmin-skills/sysadmin-diagnose)<a href="https://agentmods.dev/skills/hermeticormus/linux-sysadmin-skills/sysadmin-diagnose"><img src="https://agentmods.dev/badge/skills/hermeticormus/linux-sysadmin-skills/sysadmin-diagnose/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/hermeticormus/linux-sysadmin-skills/sysadmin-diagnose"><img src="https://agentmods.dev/badge/skills/hermeticormus/linux-sysadmin-skills/sysadmin-diagnose.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00063 | $0.00330 |
| Opus 5.5 | $0.00025 | $0.00132 |
| Sonnet 5.5 | $0.00013 | $0.00066 |
| Haiku 4.5 | $0.00006 | $0.00033 |
Grade A, and why
sysadmin-diagnose 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 1mo 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.
What it actually says
System diagnosis
A system issue is happening. Diagnose and fix it on a Debian/Ubuntu Linux machine using a systematic, hypothesis-driven loop. Gather evidence before changing anything; confirm before applying a fix.
Diagnostic steps
- Describe the problem: what is happening, and when did it start?
- Gather information:
- System logs:
journalctl -xe - Specific service logs:
systemctl status <service>andjournalctl -u <service> -xe - Resource usage:
top,htop,df -h - Network:
ip addr,ping,ss -tlnp
- System logs:
- Identify patterns: is it consistent or intermittent?
- Check recent changes: what changed before the issue appeared?
- Research: look for known issues.
- Test hypotheses: verify the likely cause before acting.
- Implement the fix: apply the solution.
- Verify: confirm the issue is resolved (
systemctl is-active <service>, reproduce the original symptom).
Be systematic and thorough. Form a hypothesis from the evidence rather than guessing, and document findings for future reference.
See full content at https://github.com/HermeticOrmus/linux-sysadmin-skills.
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.
- 1mo ago First seen · 31 lines · 63 tokens per session scan A da5351654151
sysadmin-diagnose is a skill published in the GitHub repository HermeticOrmus/linux-sysadmin-skills (6 stars, last pushed 4mo ago), licensed MIT. It adds 63 tokens to every session and 330 once invoked, about $0.0003 per session on Opus 5.5. 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.
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