AppStream is a metadata specification which permits software components to provide information about themselves to automated systems and end-users before the software is actually installed.
The appstream-generator tool 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 & packaging workflow of a distribution.
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Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.
Snap can be installed from the command line on openSUSE Leap 15.x and Tumbleweed.
You need first add the snappy repository from the terminal. Choose the appropriate command depending on your installed openSUSE flavor.
Tumbleweed:
sudo zypper addrepo --refresh https://download.opensuse.org/repositories/system:/snappy/openSUSE_Tumbleweed snappy
Leap 15.x:
sudo zypper addrepo --refresh https://download.opensuse.org/repositories/system:/snappy/openSUSE_Leap_15.6 snappy
If needed, Swap out openSUSE_Leap_15. for, openSUSE_Leap_16.0 if you’re using a different version of openSUSE.
With the repository added, import its GPG key:
sudo zypper --gpg-auto-import-keys refresh
Finally, upgrade the package cache to include the new snappy repository:
sudo zypper dup --from snappy
Snap can now be installed with the following:
sudo zypper install snapd
You then need to either reboot, logout/login or source /etc/profile to have /snap/bin added to PATH.
Additionally, enable and start both the snapd and the snapd.apparmor services with the following commands:
sudo systemctl enable --now snapd
sudo systemctl enable --now snapd.apparmor
To install AppStream Generator, simply use the following command:
sudo snap install appstream-generator
Browse and find snaps from the convenience of your desktop using the snap store snap.
Interested to find out more about snaps? Want to publish your own application? Visit snapcraft.io now.