Setting system options

Snap supports a set of system-wide options that allow you to customise your snap environment. See System options for which options are supported.

As with Configuration in snaps, these options are changed with the set and get commands, but with a target of system instead of a specific snap:

$ snap set system some.option="some value"
$ snap get system some.option

Configuration options can be unset by either passing their names to the unset command or by adding an exclamation mark (!) to the end of an option name: (from snapd 2.41+):

$ snap unset system some.option
$ # or
$ snap set system some.option!

If a setting is part of the system snap, provided by either the core snap or snapd itself, the command syntax will include two instances of system, such as with system.timezone:

$ snap set system system.timezone="Europe/London"  

Typing snap get system outputs a top-level view of system-wide option categories which can be added as arguments to view their contents:

$ snap get system
Key           Value
experimental  {...}
refresh       {...}
seed          {...}
system        {...}
$ snap get system experimental
Key                   Value
experimental.hotplug  true
experimental.layouts  true

The entire set of system configuration options can be dumped as JSON by adding the -d option:

$ snap get -d system
{
        "experimental": {
                "hotplug": true,
                "layouts": true,
                "quota-groups": true
        },
        "refresh": {
                "last": "2017-05-25T09:03:58.664837614+01:00",
                "retain": 2
        },
        "seed": {
                "loaded": true
        },
        "system": {
                "hostname": "neon",
                "network": {},
                "timezone": "UTC"
        }
}

Note: Options are not visible until after they are set. The snap get command can then be used to check their state.


Last updated 19 days ago.