SYNOPSIS

snap [OPTIONS]

DESCRIPTION

The snap tool interacts with the snapd daemon to control the snappy software platform.

OPTIONS

--version

print the version and exit

-h, --help

Show this help message

COMMANDS

abort

Abort a pending change

The abort command attempts to abort a change that still has pending tasks.

-h, --help

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ack

Adds an assertion to the system

The ack command tries to add an assertion to the system assertion database.

The assertion may also be a newer revision of a preexisting assertion that it will replace.

To succeed the assertion must be valid, its signature verified with a known public key and the assertion consistent with and its prerequisite in the database.

-h, --help

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change

List a change's tasks

The change command displays a summary of tasks associated to an individual change.

-h, --help

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changes

List system changes

The changes command displays a summary of the recent system changes performed.

-h, --help

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connect

Connects a plug to a slot

The connect command connects a plug to a slot. It may be called in the following ways:

$ snap connect <snap>:<plug> <snap>:<slot>

Connects the specific plug to the specific slot.

$ snap connect <snap>:<plug> <snap>

Connects the specific plug to the only slot in the provided snap that matches the connected interface. If more than one potential slot exists, the command fails.

$ snap connect <plug> <snap>[:<slot>]

Without a name for the snap offering the plug, the plug name is looked at in the gadget snap, the kernel snap, and then the os snap, in that order. The first of these snaps that has a matching plug name is used and the command proceeds as above.

-h, --help

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disconnect

Disconnects a plug from a slot

The disconnect command disconnects a plug from a slot. It may be called in the following ways:

$ snap disconnect <snap>:<plug> <snap>:<slot>

Disconnects the specific plug from the specific slot.

$ snap disconnect <snap>:<slot>

Disconnects any previously connected plugs from the provided slot.

$ snap disconnect <snap>

Disconnects all plugs from the provided snap.

-h, --help

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find

Finds packages to install

The find command queries the store for available packages.

-h, --help

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help

Help

How help for the snap command.

Usage: snap [OPTIONS] help [help-OPTIONS]

--man

Generate the manpage

-h, --help

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install

Install a snap to the system

The install command installs the named snap in the system.

Usage: snap [OPTIONS] install [install-OPTIONS]

--channel

Install from this channel instead of the device's default

--devmode

Install the snap with non-enforcing security

-h, --help

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interfaces

Lists interfaces in the system

The interfaces command lists interfaces available in the system.

By default all slots and plugs, used and offered by all snaps, are displayed.
  $ snap interfaces <snap>:<slot or plug>

Lists only the specified slot or plug.

$ snap interfaces <snap>

Lists the slots offered and plugs used by the specified snap.

$ snap interfaces -i=<interface> [<snap>]

Filters the complete output so only plugs and/or slots matching the provided details are listed.

Usage: snap [OPTIONS] interfaces [interfaces-OPTIONS]

-i

constrain listing to specific interfaces

-h, --help

Show this help message

known

Shows known assertions of the provided type

The known command shows known assertions of the provided type. If header=value pairs are provided after the assertion type, the assertions shown must also have the specified headers matching the provided values.

-h, --help

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list

List installed snaps

The list command displays a summary of snaps installed in the current system.

-h, --help

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login

Authenticates on snapd and the store

The login command authenticates on snapd and the snap store and saves credentials into the ~/.snap/auth.json file. Further communication with snapd will then be made using those credentials.

Login only works for local users in the sudo or admin groups.

An account can be setup at https://login.ubuntu.com

-h, --help

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logout

Log out of the store

This command logs the current user out of the store

-h, --help

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refresh

Refresh a snap in the system

The refresh command refreshes (updates) the named snap.

Usage: snap [OPTIONS] refresh [refresh-OPTIONS]

--list

show available snaps for refresh

--channel

Refresh to the latest on this channel, and track this channel henceforth

-h, --help

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remove

Remove a snap from the system

The remove command removes the named snap from the system.

The snap's data is currently not removed; use purge for that. This behaviour will change before 16.04 is final.

-h, --help

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try

Try an unpacked snap in the system

The try command installs an unpacked snap into the system for testing purposes. The unpacked snap content continues to be used even after installation, so non-metadata changes there go live instantly. Metadata changes such as those performed in snap.yaml will require reinstallation to go live.

Usage: snap [OPTIONS] try [try-OPTIONS]

--devmode

Install in development mode and disable confinement

-h, --help

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