Linux distribution
Enable an agent to recognise a Linux distribution, assess its suitability and maintenance state, and determine supported ways to obtain, deploy, update and retire it.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
recalled by Codex without web access - no source was read
Researched by: Codex
Purpose and description
Enable an agent to recognise a Linux distribution, assess its suitability and maintenance state, and determine supported ways to obtain, deploy, update and retire it.
A Linux distribution is a maintained collection of software built around the Linux kernel, with selected user-space components and mechanisms for installation, configuration and updates, supplied for use as an operating system.
It can be Compare distributions against workload, hardware and maintenance requirements.; Select an appropriate release, architecture and installation artifact.; Verify artifact provenance using the distribution's documented trust mechanism.; Plan installation and configuration through supported interfaces.; Determine supported update, upgrade and recovery procedures.; Identify unsupported components and plan migration before maintenance ends..
Distinguishing features
Uses the Linux kernel as its operating-system kernel; a Unix-like interface alone is insufficient.
Integrates a selected user space and a delivery or assembly process; a kernel source tree alone is insufficient.
Has an identifiable distribution boundary, such as an integrated release, repository set or reproducible build configuration, rather than an arbitrary collection of installed software.
Separates the distribution identity from particular releases, installation images and running installations.
Can deliver packages, complete system images or build recipes; neither a desktop interface nor GNU user-space components are required by the proposed scope.
Scope
+ Distribution identity, lineage and integration boundaries
+ Kernel, user-space and package composition policies
+ Installation artifacts, repositories and software delivery mechanisms
+ Release lifecycle, updates and security maintenance
+ Supported deployment targets and distribution governance
- Linux kernel development and internal implementation
- Individual machines, virtual machines and their installed runtime state
- Standalone applications and upstream software projects
- Maintaining organisations as institutions
- Hardware design and physical device maintenance
- Non-Linux operating-system distributions
Characteristics
- Distribution lineage
- Independent origin or named upstream distribution, with the nature of derivation recorded Shows where integration choices and inherited maintenance dependencies originate.
- User-space composition
- Recorded C library, core utilities, init or service manager, and optional desktop stack Determines important runtime and administration compatibility boundaries.
- System delivery model
- Binary packages, source-based assembly, system images, declarative builds or a documented combination Determines how software is installed, changed and recovered.
- Release model
- Fixed releases, rolling updates, snapshots or a documented hybrid Determines how an agent interprets version identity and plans upgrades.
- Supported execution targets
- Architecture, ABI, hardware platform and deployment environment, qualified by release Prevents selection of artifacts that cannot run on the intended target.
- Maintenance status
- Development, maintained, restricted maintenance, end of support or unknown, qualified by release and component scope Distinguishes available software from software that still receives relevant maintenance.
- Declared support duration
- Months or years from a specified milestone; indefinite or unspecified recorded explicitly Supports lifecycle planning without assuming that every component has the same support window.
- Artifact verification mechanism
- Signed repository metadata, signed packages, signed images, checksums or documented combinations Determines what authenticity and integrity checks are possible before installation or update.
- System mutation policy
- Mutable system, image-managed base, declarative system or hybrid, with writable boundaries recorded Determines which changes persist and which update or recovery operations are supported.
- Maintenance authority
- Named project, organisation or maintainer group responsible for identified artifacts and channels Identifies whose support statements, signing keys and release decisions apply.
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 6 bundles · 11 layers · 18 findings · 32 questions.
Identity and lineage Recognises the distribution and separates its identity from derivatives and delivery artifacts.
Similar names and shared packages do not establish identical distribution identity or maintenance responsibility.
Distribution boundary
Establishes what constitutes the integrated operating-system offering.
Integrated system identity
Record the identity under which a Linux kernel, user space and delivery or assembly process are integrated.
- What integration and delivery commitments make this a Linux distribution? definition
- Is the item a distribution, a release, an edition, a build system or an artifact produced by one? boundary
Derivation and editions
Captures inherited foundations and distinctions within a distribution family.
Upstream and variant relationships
Record derivation and edition relationships without treating shared ancestry as shared support.
- Which upstream distribution, repositories or build recipes are reused, and what is changed? provenance
- Which named variants are editions of this distribution, and which have independent release or maintenance authority? boundary
System composition and compatibility Describes the integrated software stack and the targets on which it is supported.
Linux kernel use alone does not determine application, hardware or administration compatibility.
Kernel and user space
Captures the components and policies that define the operating environment.
Base system contract
Record kernel policy, C library, core utilities and service-management choices for the relevant release or edition.
- Which kernel variants, C libraries, core utilities and init systems are supplied or supported? definition
- Which compatibility guarantees are documented for applications, kernel modules and administrative interfaces? boundary
Execution targets
Distinguishes supported architectures and deployment environments.
Target support envelope
Record supported processor and platform combinations, including the distinction between bootable systems and user-space images.
- Which architectures, ABIs, firmware interfaces and deployment environments are supported for this release? boundary
- What documented memory and storage requirements apply to each installation profile? measurement
- Does the selected artifact provide its own kernel or depend on a host-provided Linux kernel? definition
Software delivery and system change Models how a distribution is obtained, assembled and modified.
Package-based, source-built and image-managed distributions require different agent actions.
Artifacts and repositories
Identifies official delivery units and software sources.
Delivery units and channel boundaries
Record installation images, packages, source recipes and repositories together with their release and support relationships.
- Which artifacts or build inputs are required to obtain a usable system? definition
- Which repositories and channels are maintained by the distribution, and which are independently maintained additions? provenance
Installation and mutation
Captures supported provisioning and software-change mechanisms.
Supported change paths
Record how an agent installs the system and changes its software while respecting the distribution's managed boundaries.
- Which installer, package manager, build process or declarative interface should an agent use for the selected target? action
- Which system areas can be changed directly, and which must be replaced or regenerated through distribution tooling? boundary
- How are configuration changes preserved or reconciled when packages or base images are replaced? action
Release maintenance and recovery Relates release identity to maintenance coverage and supported transitions.
An installable distribution release can be unsupported, and a successful update does not imply a recoverable system.
Release and support lifecycle
Records versioning, channel progression and maintenance commitments.
Maintenance coverage
Record release or snapshot identity and support terms at the component and channel granularity actually promised.
- How are releases or rolling snapshots identified, and which channels are intended for routine use? definition
- What support dates, eligibility conditions and package exclusions apply to the selected release? boundary
Updates and recovery
Captures supported transitions and ways to recover from failed changes.
Upgrade and rollback contract
Record allowed update sequences, restart requirements and recovery limits.
- Which update and cross-release upgrade paths are supported, including any required intermediate releases? action
- Which rollback or rescue mechanisms exist, and what configuration or user data lies outside their coverage? boundary
- How should an agent determine whether an update requires service restarts or a reboot? action
Trust, security and governance Identifies authorities and evidence used to trust artifacts and interpret security maintenance.
Repository availability and software version numbers alone cannot establish authenticity or security status.
Artifact trust
Captures the trust chain for installation and update inputs.
Verification and key authority
Record what signatures or checksums cover and how their authoritative verification material is obtained.
- Where are authoritative signing keys or other verification anchors published, and who controls them? provenance
- How should an agent verify installation artifacts and repository metadata, including key rotation or revocation? action
Security and maintainer responsibility
Connects security assessments and distribution policy to accountable maintainers.
Security evidence and distribution policy
Record advisory sources, package revision evidence and policies governing included software.
- Which distribution advisories and package revision records establish whether a vulnerability is fixed, including through backported patches? provenance
- Who decides release acceptance and security maintenance, and where are those responsibilities documented? provenance
- Which policies govern inclusion and redistribution of proprietary firmware, drivers and other restricted components? boundary
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- This describes the software-distribution sense; the supplied PHY.OBJ domain code should be reviewed because a distribution is not intrinsically a physical object.
- The listed kinds overlap: release cadence, intended use and update architecture are independent classification dimensions.
- No sources were consulted. Standards conformance, identifier coverage, support periods and hardware requirements need verification for a named distribution and release.
- Which of these check these first hold for the sense of Linux distribution this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- General-purpose desktop distributions
- Server and enterprise distributions
- Embedded distributions
- Rolling-release distributions
- Fixed-release distributions
- Image-based or immutable-system distributions
- Which of these kinds and varieties hold for the sense of Linux distribution this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- os-release - ID, VERSION_ID and ID_LIKE fields - Machine-readable distribution identity and ancestry; VERSION_ID and ID_LIKE are optional.
- Common Platform Enumeration (CPE) - cpe:2.3:o:<vendor>:<product>:<version>:... - Operating-system product identifiers used in security inventories; coverage and naming vary by distribution.
- Which of these identifiers and schemes hold for the sense of Linux distribution this model covers, and on what evidence? provenance
Standards and regulation
Recalled without web access and unsourced; every item is a lead to verify.
- GNU General Public License version 2, published by the Free Software Foundation: governs distribution of the Linux kernel; other included components have their own licenses.
- Filesystem Hierarchy Standard, maintained by the Linux Foundation: defines conventional filesystem organization, with distribution-specific departures.
- POSIX, standardized by IEEE and ISO/IEC: provides operating-system interface specifications relevant to compatibility; Linux distribution status alone does not establish conformance or certification.
- Which of these standards and regulation hold for the sense of Linux distribution this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Desktop and developer workstations
- Web, application and database servers
- Cloud virtual machines and container host systems
- Embedded equipment and network appliances
- Scientific computing and high-performance computing clusters
- Which of these real-world use hold for the sense of Linux distribution this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Unpatched vulnerabilities or continued use after security support ends
- Dependency conflicts, interrupted updates or incompatible repositories leaving software unusable
- Kernel, driver or firmware incompatibilities causing boot failures or unavailable hardware
- Compromised installation images, repositories or signing credentials introducing malicious software
- Configuration errors exposing services, weakening access controls or causing data loss
- Which of these failure modes and hazards hold for the sense of Linux distribution this model covers, and on what evidence? provenance
Regional variation
Recalled without web access and unsourced; every item is a lead to verify.
- Default languages, input methods, mirrors and localization differ among distributions and deployment regions.
- Patent and redistribution constraints can affect availability of codecs, firmware and other bundled components.
- Which of these regional variation hold for the sense of Linux distribution this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- Linux kernel - The kernel manages hardware and core system resources; a distribution combines it with user-space software and a maintenance system.
- Operating system - Operating system is the broader category; a Linux distribution specifically assembles an operating system around the Linux kernel.
- Distribution release - A release is a particular published version or snapshot of a distribution; the distribution can span many releases.
- Installed operating-system instance - An instance is a particular deployed and configured system; a distribution is the maintained software collection from which instances are built.
- Container image - A container image packages a filesystem and execution metadata, often derived from a distribution, but normally uses the host kernel.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of Linux distribution this model covers, and on what evidence? provenance
What the second pass must settle
- Should the registry retain PHY / PHY.OBJ for this software-system kind, or relate it to an information-plane classification while preserving its registered identity?
- What minimum integration and maintenance boundary distinguishes a distribution from a Linux image-building toolkit or a one-off system image?
- How should container-only user-space offerings be related to distributions when they depend on a host kernel?
- Which evidence should determine whether a derivative or branded edition has become a distinct distribution rather than a variant?
- How should support coverage be represented when repositories, architectures and packages within one release have different maintainers and end dates?