Ubuntu Encyclopedia

Ubuntu documentation-first workflow for Ubuntu-specific questions, maintenance, updates, upgrades, package management, system administration, service troubleshooting, networking, storage, logs, release behavior, and diagnostics. Use when the request materially depends on Ubuntu or Ubuntu-specific tooling/behavior such as Ubuntu release behavior, apt/apt-get/dpkg/snap, systemd/systemctl/journalctl, Netplan, NetworkManager, package repair, repository/key issues, service failures, boot issues, mounts/fstab, permissions, users/groups, or non-trivial Ubuntu maintenance/troubleshooting. Do not use for generic shell, git, Python, Docker, or Linux questions unless Ubuntu-specific semantics matter.

Overview

Use a docs-first workflow for Ubuntu-specific work. Prefer Ubuntu manpages at https://manpages.ubuntu.com/manpages/ for command and utility behavior, use official Ubuntu documentation when the task is broader than a manpage, consult cached local copies under .Ubuntu-Encyclopedia/ before re-fetching, and record useful authoritative excerpts plus environment-specific operational learnings so future work gets faster and safer.

This skill is for the Ubuntu distro/admin layer. It should trigger for Ubuntu-specific package, service, networking, storage, and release-behavior questions — not for generic Linux/shell/dev tooling questions that merely happen to be asked from an Ubuntu machine.

Workflow

1. Classify the task

   • Decide whether the task is an Ubuntu-specific question, maintenance task, troubleshooting task, command-planning task, upgrade/update task, or live admin task.
   • Use this skill when the task materially depends on Ubuntu-specific behavior, Ubuntu administration knowledge, Ubuntu package/service behavior, or command semantics that should be verified from manpages or official Ubuntu docs.
   • Do not use this skill for generic shell work, generic Docker/git/Python work, or generic Linux questions that merely happen to be on Ubuntu when Ubuntu-specific semantics do not matter.

2. Check local cache first

   • Use .Ubuntu-Encyclopedia/ as the local knowledge/cache root.
   • Check these locations first when relevant:
     • .Ubuntu-Encyclopedia/manpages/manpages.ubuntu.com/...
     • .Ubuntu-Encyclopedia/docs/...
     • .Ubuntu-Encyclopedia/notes/components/...
     • .Ubuntu-Encyclopedia/notes/patterns/...
     • .Ubuntu-Encyclopedia/inventory/...
   • If a cached page or note already answers the question well enough, use it.

3. Consult authoritative Ubuntu sources before answering or acting

   • Before answering direct or indirect Ubuntu questions that depend on command syntax, package behavior, service behavior, configuration semantics, or version-sensitive distro details, consult the relevant authoritative source unless the answer is already well-supported by the local cache.
   • Prefer sources in this order:
     1. Ubuntu manpages for command and utility behavior
     2. Official Ubuntu docs for broader workflows and distro-specific guidance
   • Before performing non-trivial Ubuntu maintenance or troubleshooting work, consult the relevant docs first when:
     • the exact command semantics matter
     • service/package behavior is easy to misremember
     • the action could affect package state, service health, networking, storage, bootability, or access
   • Do not improvise high-impact Ubuntu admin commands from memory when the docs are easy to check.

4. Cache consulted docs locally

   • When you consult a manpage, save a normalized cache copy under .Ubuntu-Encyclopedia/manpages/manpages.ubuntu.com/....
   • When you consult broader Ubuntu docs, save a normalized cache copy under .Ubuntu-Encyclopedia/docs/....
   • Mirror the official path structure as much as practical.
   • Cache only pages actually consulted; do not try to mirror the whole docs site eagerly.
   • Use scripts/cache_manpage.py or scripts/cache_doc.py when appropriate.

5. Separate authoritative documentation from local observations

   • Store manpage-derived material under .Ubuntu-Encyclopedia/manpages/....
   • Store other official-doc-derived material under .Ubuntu-Encyclopedia/docs/....
   • Store environment-specific operational knowledge under:
     • .Ubuntu-Encyclopedia/notes/components/
     • .Ubuntu-Encyclopedia/notes/patterns/
     • .Ubuntu-Encyclopedia/inventory/
   • Distinguish clearly between:
     • authoritative documentation
     • observed local configuration/state
     • inferred best-practice guidance

6. Record useful local learnings

   • After useful live work, save durable notes such as:
     • package/service management patterns
     • host-specific quirks
     • repeated repair/maintenance sequences
     • networking/storage/admin gotchas
     • safe/unsafe operational boundaries for the environment
   • Prefer concise durable notes over re-learning the same Ubuntu-specific details later.

Live Work Rules

• Treat manpage/docs lookup as the default preflight for non-trivial Ubuntu work.
• Prefer read/inspect first when entering an Ubuntu area you have not recently reviewed.
• Treat release upgrades, package repair, service/network/storage changes, and boot-impacting admin work as high-sensitivity areas.
• When uncertainty remains after checking cache + docs, say so and avoid bluffing.
• When answering a question, mention when useful whether the answer comes from cached manpages, cached official docs, a fresh lookup, or live observed environment state.

Data Root

Use this workspace-local root for cache and notes:

• .Ubuntu-Encyclopedia/

Expected structure:

• .Ubuntu-Encyclopedia/manpages/manpages.ubuntu.com/...
• .Ubuntu-Encyclopedia/docs/...
• .Ubuntu-Encyclopedia/notes/components/...
• .Ubuntu-Encyclopedia/notes/patterns/...
• .Ubuntu-Encyclopedia/inventory/...

Use scripts/init_workspace.py to create or repair the expected directory structure.

Note Destinations

• Component-specific observations → .Ubuntu-Encyclopedia/notes/components/<component-name>.md
• Reusable Ubuntu patterns/gotchas → .Ubuntu-Encyclopedia/notes/patterns/<topic>.md
• Environment-wide deployment/access info → .Ubuntu-Encyclopedia/inventory/*.md
• Cached manpages → .Ubuntu-Encyclopedia/manpages/manpages.ubuntu.com/...
• Cached official docs → .Ubuntu-Encyclopedia/docs/...

Secrets / Sensitive Data

• Do not store plaintext credentials, API keys, session tokens, private URLs, recovery codes, or other secrets in the encyclopedia notes/inventory tree.
• If a note needs to mention access details, keep it high-level and redact or omit secret material.
• Treat these workspace notes as operational memory, not as a secrets vault.

Resources

• scripts/init_workspace.py — create or repair the .Ubuntu-Encyclopedia/ directory tree.
• scripts/cache_manpage.py — fetch and cache a consulted Ubuntu manpage under .Ubuntu-Encyclopedia/manpages/....
• scripts/cache_doc.py — fetch and cache a consulted official Ubuntu docs page under .Ubuntu-Encyclopedia/docs/....
• references/workflow.md — detailed operating workflow and evidence-handling rules.
• references/cache-layout.md — canonical .Ubuntu-Encyclopedia/ directory structure.
• references/topic-map.md — useful Ubuntu topic groupings for faster authoritative lookup.

Good Outcomes

• Answer an Ubuntu-specific question using cached or freshly checked manpages/docs instead of guesswork.
• Inspect a live Ubuntu host after checking the relevant docs and record any new local operational knowledge.
• Build a growing local Ubuntu knowledge cache that makes later work faster, safer, and more grounded.
• Turn one-off Ubuntu discoveries into durable notes so future work does not rediscover them from scratch.

Avoid

• Triggering on generic shell work that is not materially Ubuntu-specific.
• Answering Ubuntu-specific questions purely from memory when authoritative sources are easy to consult.
• Treating local observed behavior as if it were guaranteed authoritative documented behavior.
• Dumping large amounts of low-value docs into the workspace without a reason.
• Making high-impact live changes before checking the relevant docs when exact behavior matters.