package-managementsnap
So I installed vlc daily built snap package.
It's working great, no problems there. However I noticed that after upgrade the system has 2 versions of vlc (7 and 9). That can be seen when browsing /snap/vlc/ directory and using system monitor.
This is also the case with other snaps. Is there a way to automatically delete older versions of snaps? Or do I just delete them using plain "rm" command? Is it safe to delete them that way?
Right now I don't believe it's possible to change the number of old versions of any snap, that's set at 3. If you see more than that, it's likely a bug, so should be filed at https://bugs.launchpad.net/ubuntu/+source/snapd
It is at the time of this writing not possible (officially), which has stirred quite a debate. Better ways to control updates on the desktop are still being discussed.
Block the store in your /etc/hosts/ file:
127.0.0.1 api.snapcraft.io
For me what worked was sudo nano /etc/hosts, copy-pasted the line, then I hit F2, then Y, then ENTER.
Disable automatic updating if the network connection is metered.
First, go to your network settings.
Then, click on the cog wheels on the right side of both of your network interfaces and tick "restrict background data usage" - this marks the connection as being metered.
Finally, open a terminal and type (docs):
sudo snap set system refresh.metered=hold
Best Answer
Snapd will automatically retain three revisions (usually current plus two older) by default, and will delete older.
In mid-2018, snapd was updated so that the number of revisions is configurable (though never less than 2).
Use the command:
snap set system refresh.retain=NN cannot be less than two.