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[手动选题][tech]: 20220716 How to Clean Up Snap Versions to Free Up Disk Space.md
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[#]: subject: "How to Clean Up Snap Versions to Free Up Disk Space"
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[#]: via: "https://www.debugpoint.com/clean-up-snap/"
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[#]: author: "Arindam https://www.debugpoint.com/author/admin1/"
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[#]: collector: "lkxed"
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[#]: translator: " "
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[#]: reviewer: " "
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[#]: publisher: " "
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[#]: url: " "
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How to Clean Up Snap Versions to Free Up Disk Space
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======
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This quick guide with a script helps to clean up old snap versions and free some disk space in your Ubuntu systems.
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I was running out of disk space in my test system with Ubuntu. So I was investigating via GNOME’s Disk Usage Analyser to find out which package is consuming the precious SSD space. Apart from the usual cache and home directory – to my surprise, I found that Snap and Flatpak consume a considerable amount of storage space.
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![Snap size – before cleanup][1]
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Although, I always maintain a rule – not to use Snap or Flatpak unless necessary. This is mainly because of their installation size and other issues. I prefer vanilla deb and rpm packages. Over the years, I have installed and removed a certain amount of Snap packages in this test system.
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The problem arises after uninstallation; Snap keeps some residue files in the system, unknown to the general users.
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So I opened the Snap folder `/var/lib/snapd/snaps` and discovered that Snap is keeping track of older versions of previously installed/uninstalled packages.
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For example, in the below image, you can see GNOME 3.28, 3.34, and Wine – all of these are removed long back. But they are still there. Its happening because of the Snap design which keeps versions of uninstalled packages after a proper uninstallation.
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![Files under snaps directory][2]
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Alternatively, you can get the same in terminal using:
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```
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snap list --all
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```
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![snap list all][3]
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The default value is 3 for several revisions for retention. That means Snap keeps 3 older versions of each package, including the active version. This is okay if you do not have constraints on your disk space.
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But for servers and other use cases, this can easily run into cost issues, consuming your disk space.
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However, you can easily modify the count using the following command. The value can be between 2 to 20.
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```
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sudo snap set system refresh.retain=2
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```
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### Clean Up Snap Versions
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In a post in SuperUser, Popey, the ex-Engineering Manager at Canonical, [provided a simple script][4] that can clean up old versions of Snaps and keep the latest one.
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Here’s the script we will use to clean the Snap up.
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```
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#!/bin/bash
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#Removes old revisions of snaps
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#CLOSE ALL SNAPS BEFORE RUNNING THIS
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set -eu
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LANG=en_US.UTF-8 snap list --all | awk '/disabled/{print $1, $3}' |
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while read snapname revision; do
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snap remove "$snapname" --revision="$revision"
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done
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```
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Save the above script as .sh in a directory (for example`clean_snap.sh` ), give it executable permission and run.
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```
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chmod +x clean_snap.sh
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```
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When I ran the script, it reduced a lot of disk space. The script would also show the name of the package being removed.
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![Executing the script][5]
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![Snaps size after cleanup][6]
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### Closing Notes
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There are always debates on how efficient Snap’s design is. Many say it is broken by design, bloated, and heavy on systems. Some part of that argument is true, I would not deny it. The whole concept of sandboxing applications is great if implemented and enhanced properly. I believe, Flatpak does a better job compared to Snap.
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That said, I hope this helps you clean up some disk space. Although it is tested in Ubuntu, it should work in all Linux distribution that supports Snap.
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Also, check out our guide on [how to clean up Ubuntu][7] with additional steps.
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Finally, if you are looking for cleaning up **Flatpak** apps, refer [this guide][8].
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--------------------------------------------------------------------------------
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via: https://www.debugpoint.com/clean-up-snap/
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作者：[Arindam][a]
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选题：[lkxed][b]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://www.debugpoint.com/author/admin1/
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[b]: https://github.com/lkxed
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[1]: https://www.debugpoint.com/wp-content/uploads/2021/03/Snap-size-before-cleanup.jpg
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[2]: https://www.debugpoint.com/wp-content/uploads/2021/03/Files-under-snaps-directory.jpg
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[3]: https://www.debugpoint.com/wp-content/uploads/2021/03/snap-list-all.jpg
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[4]: https://superuser.com/a/1330590
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[5]: https://www.debugpoint.com/wp-content/uploads/2021/03/Executing-the-script.jpg
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[6]: https://www.debugpoint.com/wp-content/uploads/2021/03/Snaps-size-after-cleanup.jpg
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[7]: https://www.debugpoint.com/2018/07/4-simple-steps-clean-ubuntu-system-linux/
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[8]: https://www.debugpoint.com/clean-up-flatpak/
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