urlwatch を Homebrew, apk, apt, dnf, Nix, pacman, zypper でインストール

プロジェクトリンク

• ホームページ

コマンドとエイリアス

• urlwatch

プロジェクトの歴史

The project is presented on Thomas Perl's site under a 2008 URL path, and the current site lists version 2.29 as a 2024 source distribution. Its public GitHub repository was created in 2014, while the current handbook documents the modern 2.x architecture: YAML job files, a separate urlwatch.yaml configuration file, reporters, filters, shell jobs, browser jobs, and an SQLite cache database for stored history.

The migration documentation explains the importance of the 2.0 line: URLs moved into YAML, the cache directory became an SQLite database, hooks were replaced by extensible jobs, filters, and reporters, and a configuration file was added for user preferences. Those changes turned a simple URL checker into a broader change-monitoring framework while keeping the command-line workflow.

採用の歴史

The official project page links to PyPI, GitHub, and Repology packaging status; the input package-manager matrix lists Alpine, Homebrew, Debian, Fedora/dnf, Nix, Arch/pacman, Ubuntu, and openSUSE/zypper. That combination shows urlwatch as a widely packaged Unix-style automation utility rather than a one-platform script.

使われ方

A common setup is to install urlwatch, run it once, edit urls.yaml with urlwatch --edit, edit settings and reporters with urlwatch --edit-config, and schedule periodic runs with cron. Each run retrieves a job, applies filters, compares the result against the previous version, and invokes reporters if differences are found.

The handbook's job model covers ordinary URL fetches, headless-browser navigation for JavaScript-rendered pages, and shell commands. Its filter system supports selectors, HTML-to-text conversion, PDF and JSON handling, grep-like filtering, sorting, checksums, and chained transformations, making it useful for monitoring release pages, package indexes, documents, APIs, or local command output.

パッケージ好きにとっての重要性

urlwatch is especially relevant to package-manager culture because package maintainers and power users often need to notice upstream tarballs, changelogs, documentation, security advisories, or formula metadata changing before those changes appear in a feed. It is also itself a well-packaged Python CLI with an official website, PyPI releases, Read the Docs documentation, and broad distro availability.

タイムライン

• 2008: Project website is published under thp.io/2008/urlwatch.
• 2014-01-29: Public GitHub repository metadata records repository creation.
• 2.0: Migration docs describe the move to YAML jobs, SQLite cache history, extensible jobs, filters, reporters, and urlwatch.yaml.
• 2024-10-28: Project site lists urlwatch 2.29 source distribution.

Related projects

• urlwatch belongs to the same practical family as cron, diff, web-checking scripts, feed monitors, and package-update watchers, but wraps those patterns in a reusable CLI with filters, reporters, and persistent change history.

ソース

• GitHub repository metadata: https://api.github.com/repos/thp/urlwatch
• Input source_facts.package-manager lists cross-distribution packaging.
• Official README: https://raw.githubusercontent.com/thp/urlwatch/master/README.md
• Official handbook: https://urlwatch.readthedocs.io/en/latest/
• Official introduction: https://urlwatch.readthedocs.io/en/latest/introduction.html
• Official migration guide: https://urlwatch.readthedocs.io/en/latest/migration.html
• Official project site: https://thp.io/2008/urlwatch/