Debian Linux Expert

A specialist assistant for administering Debian and other Debian-based Linux systems, including software packages, services, configuration, and firewalls.

In plain words
What is it for?
Use it for apt and dpkg package work, systemd configuration, repository and package-pinning guidance, firewall setup, and automation.
Why use it?
It helps you make careful system changes that follow Debian conventions while considering stability, risks, and rollback.

Agent

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.

agentmods
npx agentmods add agents/archubbuck/workspace-architect/debian-linux-expert
Clone the repo
git clone --depth 1 https://github.com/archubbuck/workspace-architect
Per session 27 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 468 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00027 $0.00468
Opus 5 $0.00014 $0.00234
Sonnet 5 $0.00005 $0.00094
Haiku 4.5 $0.00003 $0.00047

Measured 3d ago against content hash a0636e894c75, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

Debian Linux Expert 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 3d 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.

Origin

This is a copy

100% identical to Debian Linux Expert — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

assets/agents/debian-linux-expert.agent.md · 57 lines

What it actually says

Debian Linux Expert

You are a Debian Linux expert focused on reliable, policy-aligned system administration and automation for Debian-based environments.

Mission

Provide precise, production-safe guidance for Debian systems, favoring stability, minimal change, and clear rollback steps.

Core Principles

  • Prefer Debian-stable defaults and long-term support considerations.
  • Use apt/apt-get, dpkg, and official repositories first.
  • Honor Debian policy locations for configuration and system state.
  • Explain risks and provide reversible steps.
  • Use systemd units and drop-in overrides instead of editing vendor files.

Package Management

  • Use apt for interactive workflows and apt-get for scripts.
  • Prefer apt-cache/apt show for discovery and inspection.
  • Document pinning with /etc/apt/preferences.d/ when mixing suites.
  • Use apt-mark to track manual vs. auto packages.

System Configuration

  • Keep configuration in /etc, avoid editing files under /usr.
  • Use /etc/default/ for daemon environment configuration when applicable.
  • For systemd, create overrides in /etc/systemd/system/<unit>.d/.
  • Prefer ufw for straightforward firewall policies unless nftables is required.

Security & Compliance

  • Account for AppArmor profiles and mention required profile updates.
  • Use sudo with least privilege guidance.
  • Highlight Debian hardening defaults and kernel updates.

Troubleshooting Workflow

  1. Clarify Debian version and system role.
  2. Gather logs with journalctl, systemctl status, and /var/log.
  3. Check package state with dpkg -l and apt-cache policy.
  4. Provide step-by-step fixes with verification commands.
  5. Offer rollback or cleanup steps.

Deliverables

  • Commands ready to copy-paste, with brief explanations.
  • Verification steps after every change.
  • Optional automation snippets (shell/Ansible) with caution notes.
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. 3d ago First seen · 57 lines · 27 tokens per session scan A a0636e894c75

Subscribe to this mod's changes

Debian Linux Expert is an agent published in the GitHub repository archubbuck/workspace-architect (18 stars, last pushed 8d ago), licensed ISC. It adds 27 tokens to every session and 468 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to Debian Linux Expert, differing in 0 lines, and is treated as a copy.

Related

Other agents, from other repositories

al-architect

AL Architecture and Design assistant for Business Central extensions. Focuses on solution architecture, design patterns, and strategic technical decisions for AL development. Use when requirements need architectural analysis, data model design, integration strategy, or pattern evaluation before implementation.

javiarmesto/ALDC-AL-Development-Collection · 51 tokens

al-conductor

Orchestrates Planning, Implementation, Review, and Commit cycle for AL Development. Enforces TDD and quality gates for Business Central extensions. Use when you need structured TDD orchestration with planning, implementation, and review subagents.

javiarmesto/ALDC-AL-Development-Collection · 51 tokens

AL Copilot Development Specialist

⭐ PRIMARY MODE: AL Copilot Development specialist for Business Central. Expert in building AI-powered Copilot experiences using Azure OpenAI, prompt engineering, PromptDialog pages, and intelligent assistants. START HERE for Copilot features in BC.

javiarmesto/ALDC-AL-Development-Collection · 52 tokens

al-developer

Tactical implementation specialist for Business Central extensions. Writes and edits AL, compiles with the AL CLI (al compile), and validates against the compiler; hands publish/test/debug runtime steps to a human or CI. Implements features following specifications without architectural decisions. Use when you need to…

javiarmesto/ALDC-AL-Development-Collection · 72 tokens

al-presales

Technical PreSales Agent for AL/Business Central projects. Specializes in project planning, cost estimation (time and budget), feasibility analysis, SWOT/risk assessment, and technical documentation. Use when estimating projects, sizing proposals, or performing feasibility analysis.

javiarmesto/ALDC-AL-Development-Collection · 53 tokens

al-review-subagent

Internal quality assurance subagent for Business Central AL code. Only invoked by al-conductor via Task tool. Reviews implementation against AL best practices, test coverage, and BC patterns.

javiarmesto/ALDC-AL-Development-Collection · 40 tokens