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appstream-generator - Generate AppStream metadata from distribution repositories



appstream-generator - Generate AppStream metadata from distribution repositories


appstream-generator [ COMMAND]


This manual page documents briefly the appstream-generator command.
appstream-generator generates AppStream metadata from the repositories of a software distribution. It currently supports the following repository formats / distributions: Debian, Ubuntu, Arch Linux, RPM-MD (Fedora, Mageia).
The generator will produce AppStream collection metadata files in the AppStream YAML or XML format to be shipped to users, as well as a detailed HTML report about found components and HTML and JSON reports on issues detected with the scanned metadata. It reads .desktop files as well as metainfo files, renders fonts, scales images, caches screenshots etc. to produce high-quality metadata for AppStream based software centers to consume. Usually, appstream-generator is integrated with the existing software build & delivery workflow of a distribution.
The appstream-generator tool is based on the libappstream library for metadata conversion and analysis. If you just want to embed AppStream metadata processing into another tool, using libappstream is likely a better choice. The generator tool does some heavy lifting like rendering fonts and scaling images, which might not be necessary for simple cases.
To use appstream-generator, a asgen-config.json file is required. Its format is described in detail in the asgen-config.json documentation[1].
For more information about the AppStream project and the other components which are part of it, take a look at the AppStream pages at[2].


process SUITE
Process new metadata for the given distribution suite.
Cleanup old/expired metadata and media files from the cache and directories.
remove-found SUITE
Drop all valid processed metadata and hints from the selected suite.
forget PKID
Drop all information we have about this (partial) package-id.
A package-id consists of a name/version/arch triplet. For this command, the version and architecture can be omitted.
info PKID
Show information associated with this (full) package-id.
A package-id consists of a name/version/arch triplet.
Define the workspace location.
If this flag is omitted, the current directory is assumed as the workspace location.
Enforce the command.
Show extra debugging information.
Display the version number of appstream-generator.


appstreamcli (1).


This manual page was written by Matthias Klumpp <>. Copyright © 2016-2017 Matthias Klumpp


the asgen-config.json documentation
AppStream Generator