Disable Ubuntu Core Autoupdate

Ubuntu Core automatically updates installed snaps, for example 'core' snap, and to return to previous version I need to run the command

snap revert 

But I want to control this myself and update manually only.

How to disable autoupdate of concrete snaps or disable this feature systemwide?

P.S. I have read the documentation here on developer.ubuntu.com , but my system distribution of Ubuntu Core 16 on Raspberry Pi does not have a snappy command. How do I disable autoupdate without the snappy command?

Solution 1:

You can't disable autoupdate. You can, however, control the update schedule:

snap set core refresh.schedule=<spec>

I can't find an easily-accessible description of the spec (I'll update this answer if I do), but here are some examples:

• 9:00-15:00 (every day between 9am and 3pm)
• 9:00-15:00/21:00-22:00 (every day between 9am,5pm and 9pm,10pm)
• thu@9:00-15:00 (only Thursday between 9am and 3pm)
• fri@9:00-11:00/mon@13:00-15:00 (only Friday between 9am and 3pm and Monday between 1pm and 3pm)
• fri@9:00-11:00/13:00-15:00 (only Friday between 9am and 3pm and every day between 1pm and 3pm)