# Ubuntu project

> This documentation provides guidance for contributors to and maintainers of the Ubuntu Linux distribution. It covers processes and concepts, as well as project governance and team workflows. There are instructions for packaging, merging, proposed migrations, autopkgtests, and many other procedures for maintaining the Ubuntu Archive and releasing the distribution.


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## Pages in this subsection

- [Advanced contributor tasks](https://documentation.ubuntu.com/project/contributors/advanced.md): These tasks assume that you are already familiar with the more fundamental
- [Check publication history](https://documentation.ubuntu.com/project/contributors/advanced/check-publication-history.md): Currently this page only contains checking removals, but we can add other sections as
- [Checking reverse dependencies](https://documentation.ubuntu.com/project/contributors/advanced/check-reverse-dependencies.md): You usually want to check reverse dependencies to avoid causing:
- [How to handle `git-ubuntu` uploads](https://documentation.ubuntu.com/project/contributors/advanced/handle-git-ubuntu-uploads.md): git-ubuntu is tooling that provides unified git-based workflows for the development of Ubuntu source...
- [How to upload with rich history](https://documentation.ubuntu.com/project/contributors/advanced/upload-with-rich-history.md): See the rich history explanation for context.
- [How to review a merge proposal](https://documentation.ubuntu.com/project/contributors/advanced/review-a-merge-proposal.md): Establishing a review process before sponsoring or uploading content has helped to maintain consiste...
- [How to sponsor an upload](https://documentation.ubuntu.com/project/contributors/advanced/sponsor-an-upload.md): Use these instructions when sponsoring an upload.
- [How to sponsor a sync](https://documentation.ubuntu.com/project/contributors/advanced/sponsor-a-sync.md): Use these instructions when sponsoring an upload.
- [How to resolve a migration issue](https://documentation.ubuntu.com/project/contributors/advanced/resolve-a-migration-issue.md): This article provides guidance on how to resolve migration issues.
- [+1 Maintenance](https://documentation.ubuntu.com/project/contributors/advanced/plus-one-maintenance.md): The +1 maintenance is originally a Canonical program to improve the general
- [+1 Maintenance report template](https://documentation.ubuntu.com/project/contributors/advanced/plus-one-report-template.md): Here is a template one can use to file a +1 maintenance report.
- [update-excuses](https://documentation.ubuntu.com/project/contributors/advanced/update-excuses.md): The update-excuses page
- [How to request a package removal](https://documentation.ubuntu.com/project/contributors/advanced/aa-request-package-removal.md): Packages that are removed from Debian are semi-automatically removed from

## Optional

- [Top-level llms.txt](https://documentation.ubuntu.com/project/llms.txt): Complete documentation index.