Running out of disk space on Ubuntu? Before you start uninstalling applications or clearing caches, you might want to check your snap revisions. I've been

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Snap packages on Ubuntu keep two versions of each installed application by default, which can consume several gigabytes of disk space. While this rollback capability is valuable for industrial and IoT use cases, desktop users can manually remove disabled snap revisions using `sudo snap remove --revision=XXXX snap-name` to reclaim space. The article walks through checking snap disk usage with `snap list --all` and Disk Usage Analyser, then selectively removing old revisions. This is a temporary solution since snaps will accumulate old versions again as they update.

Free Up Disk Space by Removing Old Snap Versions

Why snap revisions exist (and why to keep them)