linux-systems-lord

linux-systems-lord is a skill for Claude Code, Codex from m3taz-ahmed/ai-globals. It costs 23 tokens per session (864 once invoked), scanned B, original, MIT.

A Linux systems specialist covering the operating system kernel, services, networking, eBPF, performance, and security. The Linux kernel is the core software that manages hardware and system resources.

In plain words
What is it for?
It helps debug and tune Linux systems, investigate networking and service issues, inspect kernel behaviour, use eBPF for system visibility, and improve performance or hardening.
Why use it?
It helps separate application-level problems from operating-system problems and points investigations toward concrete services, files, and settings.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit It helps debug and tune Linux systems, investigate networking and service issues, inspect kernel behaviour, use eBPF for system visibility, and improve performance or hardening.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/m3taz-ahmed/ai-globals/linux-systems-lord
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.

Any agent
npx skills add m3taz-ahmed/ai-globals --skill linux-systems-lord
Clone the repo
git clone --depth 1 https://github.com/m3taz-ahmed/ai-globals

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for linux-systems-lord

README.md
[![agentmods](https://agentmods.dev/badge/skills/m3taz-ahmed/ai-globals/linux-systems-lord/github.svg)](https://agentmods.dev/skills/m3taz-ahmed/ai-globals/linux-systems-lord)
Your own site
<a href="https://agentmods.dev/skills/m3taz-ahmed/ai-globals/linux-systems-lord"><img src="https://agentmods.dev/badge/skills/m3taz-ahmed/ai-globals/linux-systems-lord/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.

agentmods 80×15 button for linux-systems-lord

Your own site · 80×15
<a href="https://agentmods.dev/skills/m3taz-ahmed/ai-globals/linux-systems-lord"><img src="https://agentmods.dev/badge/skills/m3taz-ahmed/ai-globals/linux-systems-lord.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 23 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 864 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00023 $0.00864
Opus 5.5 $0.00009 $0.00346
Sonnet 5.5 $0.00005 $0.00173
Haiku 4.5 $0.00002 $0.00086

Measured 1mo ago against content hash 46d0a33656c6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

linux-systems-lord scanned grade B with 1 finding 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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

15. [PROHIBIT] `kill -9` as a first resort, `chmod 777`, disabling SELinux instead of fixing contexts, tuning blind (change without measurement), or running diagnostic tools on prod without understanding their overhead.
skills/linux-systems-lord/SKILL.md · 23 lines

What it actually says

[SKILL] linux-systems-lord [OBJ] Debug and tune Linux from syscall to service. [RULES]

  1. [CMD] IDs: Linux kernel /torvalds/linux, kernel docs /websites/kernel_doc_html, systemd /systemd/systemd, eBPF /isovalent/ebpf-docs, Cilium /cilium/cilium.
  2. [REQ] Pillar coverage: kernel architecture, process/service management, filesystems/storage, Linux networking, eBPF, performance engineering, observability, security/hardening.
  3. [REQ] Query relevant ID with full question + topic (networking, systemd, ebpf, kernel, performance).
  4. [REQ] Distinguish user-space vs kernel-space symptoms.
  5. [REQ] Cite exact file paths, unit names, sysctl keys.
  6. [REQ] Diagnostic method: USE per resource (Utilization, Saturation, Errors) — uptime/vmstat/iostat -xz 1/free/ss/top establish the picture in <60s before deep dives. CPU ≠ load: runnable queue (load) can be CPU, uninterruptible I/O, or lock contention — pidstat, /proc/pressure/* (PSI) disambiguate.
  7. [REQ] systemd discipline: services as units with Restart=, RestartSec=, resource limits (MemoryMax=, CPUQuota=), hardening directives (NoNewPrivileges, ProtectSystem, PrivateTmp), After=/Wants= ordering explicit, journalctl -u for logs, systemd-analyze blame/critical-chain for boot.
  8. [REQ] Process forensics: /proc/<pid>/ is the truth (status, maps, fd, limits), strace -f -tt for syscall behavior, lsof/fuser for file/socket owners, ps states (R/S/D/Z) interpreted correctly — D-state = kernel wait, usually I/O.
  9. [REQ] Networking: ss -tlnp/ip -s link/ip route/resolvectl baseline; TCP states understood (TIME_WAIT vs CLOSE_WAIT diagnosis); nftables/firewalld rules audited; DNS failures checked before blaming the app; MTU/nat/offload edge cases on overlays.
  10. [REQ] Storage: df -h + df -i (inodes!) + lsblk + SMART; filesystem per workload (ext4 default, xfs large files, btrfs/zfs features with ops cost); ionice/queue tuning only after iostat shows queue depth problems.
  11. [REQ] Memory: free vs available (cache is healthy), OOM-killer logs in dmesg, swap/swappiness deliberate, cgroup limits vs system overcommit understood — OOM kills hit cgroup limits first.
  12. [REQ] eBPF for truth: bpftrace/bcc tools (execsnoop, opensnoop, biolatency, tcplife) when classic tools can't see it; perf for CPU flame graphs; kernel tracing is the last-mile tool not the first.
  13. [REQ] Security: least privilege + capabilities (getcap), auditd for forensics, sysctl hardening (net.ipv4., kernel.), seccomp/apparmor profiles where warranted, world-writable/SUID audits on schedule.
  14. [REQ] Tuning discipline: sysctl changes with measured before/after + documented rationale + persistence in /etc/sysctl.d/; never cargo-cult tuning flags from blog posts.
  15. [PROHIBIT] kill -9 as a first resort, chmod 777, disabling SELinux instead of fixing contexts, tuning blind (change without measurement), or running diagnostic tools on prod without understanding their overhead.
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. 1mo ago Changed · +10 lines scan A → B 46d0a33656c6
  2. 1mo ago First seen · 13 lines · 23 tokens per session scan A 3db60aa8b64e

Subscribe to this mod's changes

linux-systems-lord is a skill published in the GitHub repository m3taz-ahmed/ai-globals (5 stars, last pushed 5d ago), licensed MIT. It adds 23 tokens to every session and 864 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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