snap(8)

NAME
snap - Tool to interact with snaps

SYNOPSIS
snap [OPTIONS]

DESCRIPTION
The snap command lets you install, configure, refresh and remove snaps. Snaps are packages that work across many different Linux distributions, enabling secure delivery and operation of the latest apps and utilities.

OPTIONS

COMMANDS

  abort
Abort a pending change The abort command attempts to abort a change that still has pending tasks. Usage: snap abort [abort-OPTIONS]

--last
    Select last change of given type (install, refresh, remove, try, auto-refresh, etc.). A question mark at the end of the type means to do nothing (instead of returning an error) if no change of the given type is found. Note the question mark could need protecting from the shell.

  ack
Add 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 pre-existing 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.

  alias
Set up a manual alias The alias command aliases the given snap application to the given alias. Once this manual alias is setup the respective application command can be invoked just using the alias. Usage: snap alias [alias-OPTIONS]

--no-wait
    Do not wait for the operation to finish but just print the change id.

  aliases
List aliases in the system The aliases command lists all aliases available in the system and their status. $ snap aliases <snap> Lists only the aliases defined by the specified snap. An alias noted as undefined means it was explicitly enabled or disabled but is not defined in the current revision of the snap, possibly temporarily (e.g. because of a revert). This can cleared with 'snap alias --reset'.

  changes
List system changes The changes command displays a summary of system changes performed recently. Usage: snap changes [changes-OPTIONS]

--abs-time
    Display absolute times (in RFC 3339 format). Otherwise, display relative times up to 60 days, then YYYY-MM-DD.

  check-snapshot
Check a snapshot The check-snapshot command verifies the user, system and configuration data of the snaps included in the specified snapshot. The check operation runs the same data integrity verification that is performed when a snapshot is restored. By default, this command checks all the data in a snapshot. Alternatively, you can specify the data of which snaps to check, or for which users, or a combination of these. If a snap is included in a check-snapshot operation, excluding its system and configuration data from the check is not currently possible. This restriction may be lifted in the future. Usage: snap check-snapshot [check-snapshot-OPTIONS]

--no-wait
    Do not wait for the operation to finish but just print the change id.

--users
    Check data of only specific users (comma-separated) (default: all users)

  connect
Connect 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 provided plug to the given 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 <snap>:<plug> Connects the provided plug to the slot in the core snap with a name matching the plug name. Usage: snap connect [connect-OPTIONS]

--no-wait
    Do not wait for the operation to finish but just print the change id.

  connections
List interface connections The connections command lists connections between plugs and slots in the system. Unless <snap> is provided, the listing is for connected plugs and slots for all snaps in the system. In this mode, pass --all to also list unconnected plugs and slots. $ snap connections <snap> Lists connected and unconnected plugs and slots for the specified snap. Usage: snap connections [connections-OPTIONS]

--all
    Show connected and unconnected plugs and slots

  create-cohort
Create cohort keys for a set of snaps The create-cohort command creates a set of cohort keys for a given set of snaps. A cohort is a view or snapshot of a snap's "channel map" at a given point in time that fixes the set of revisions for the snap given other constraints (e.g. channel or architecture). The cohort is then identified by an opaque per-snap key that works across systems. Installations or refreshes of the snap using a given cohort key would use a fixed revision for up to 90 days, after which a new set of revisions would be fixed under that same cohort key and a new 90 days window started.

  debug
Run debug commands The debug command contains a selection of additional sub-commands. Debug commands can be removed without notice and may not work on non-development systems.

  debug confinement
Print the confinement mode the system operates in The confinement command will print the confinement mode (strict, partial or none) the system operates in.

  debug connectivity
Check network connectivity status The connectivity command checks the network connectivity of snapd.

  debug migrate-home
Migrate snaps' directory to ~/Snap. Migrate snaps' directory to ~/Snap. Usage: debug migrate-home [migrate-home-OPTIONS]

--no-wait

  debug paths
Print system paths The paths command prints the list of paths detected and used by snapd.

  debug sandbox-features
Print sandbox features available on the system The sandbox command prints tags describing features of individual sandbox components used by snapd on a given system. Usage: debug sandbox-features [sandbox-features-OPTIONS]

--required
    Ensure that given backend:feature is available

  debug stacktraces
Obtain stacktraces of all snapd goroutines Obtain stacktraces of all snapd goroutines.

  debug state
Inspect a snapd state file. Inspect a snapd state file, bypassing snapd API. Usage: debug state [state-OPTIONS]

--abs-time
    Display absolute times (in RFC 3339 format). Otherwise, display relative times up to 60 days, then YYYY-MM-DD.

--changes
    List all changes

--task
    ID of the task to inspect

--change
    ID of the change to inspect

--check
    Check change consistency

--connections
    List all connections

--connection
    Show details of the matching connections (snap or snap:plug,snap:slot or snap:plug-or-slot

--is-seeded
    Output seeding status (true or false)

--dot
    Dot (graphviz) output

--no-hold
    Omit tasks in 'Hold' state in the change output

  debug timings
Get the timings of the tasks of a change The timings command displays details about the time each task runs. Usage: debug timings [timings-OPTIONS]

--last
    Select last change of given type (install, refresh, remove, try, auto-refresh, etc.). A question mark at the end of the type means to do nothing (instead of returning an error) if no change of the given type is found. Note the question mark could need protecting from the shell.

--ensure
    Show timings for a change related to the given Ensure activity (one of: auto-refresh, become-operational, refresh-catalogs, refresh-hints, seed)

--all
    Show timings for all executions of the given Ensure or startup activity, not just the latest

--startup
    Show timings for the startup of given subsystem (one of: load-state, ifacemgr)

--verbose
    Show more information

  disable
Disable a snap in the system The disable command disables a snap. The binaries and services of the snap will no longer be available, but all the data is still available and the snap can easily be enabled again. Usage: snap disable [disable-OPTIONS]

--no-wait
    Do not wait for the operation to finish but just print the change id.

  disconnect
Disconnect 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 or plug> Disconnects everything from the provided plug or slot. The snap name may be omitted for the core snap. When an automatic connection is manually disconnected, its disconnected state is retained after a snap refresh. The --forget flag can be added to the disconnect command to reset this behaviour, and consequently re-enable an automatic reconnection after a snap refresh. Usage: snap disconnect [disconnect-OPTIONS]

--no-wait
    Do not wait for the operation to finish but just print the change id.

--forget
    Forget remembered state about the given connection.

  download
Download the given snap The download command downloads the given snap and its supporting assertions to the current directory with .snap and .assert file extensions, respectively. Usage: snap download [download-OPTIONS]

--channel
    Use this channel instead of stable

--edge
    Install from the edge channel

--beta
    Install from the beta channel

--candidate
    Install from the candidate channel

--stable
    Install from the stable channel

--revision
    Download the given revision of a snap, to which you must have developer access

--basename
    Use this basename for the snap and assertion files (defaults to <snap>_<revision>)

--target-directory
    Download to this directory (defaults to the current directory)

--cohort
    Download from the given cohort

  enable
Enable a snap in the system The enable command enables a snap that was previously disabled. Usage: snap enable [enable-OPTIONS]

--no-wait
    Do not wait for the operation to finish but just print the change id.

  export-snapshot
Export a snapshot Export a snapshot to the given filename.

  find
Find packages to install The find command queries the store for available packages. With the --private flag, which requires the user to be logged-in to the store (see 'snap help login'), it instead searches for private snaps that the user has developer access to, either directly or through the store's collaboration feature. A green check mark (given color and unicode support) after a publisher name indicates that the publisher has been verified. Usage: snap find [find-OPTIONS]

Aliases: search

--private
    Search private snaps.

--narrow
    Only search for snaps in “stable”.

--section [="show-all-sections-please"] <default: "no-section-specified">
    Restrict the search to a given section.

--color <default: "auto">
    Use a little bit of color to highlight some things.

--unicode <default: "auto">
    Use a little bit of Unicode to improve legibility.

  forget
Delete a snapshot The forget command deletes a snapshot. This operation can not be undone. A snapshot contains archives for the user, system and configuration data of each snap included in the snapshot. By default, this command forgets all the data in a snapshot. Alternatively, you can specify the data of which snaps to forget. Usage: snap forget [forget-OPTIONS]

--no-wait
    Do not wait for the operation to finish but just print the change id.

  get
Print configuration options The get command prints configuration options for the provided snap.
    $ snap get snap-name username
    frank If multiple option names are provided, the corresponding values are returned:
    $ snap get snap-name username password
    Key Value
    username frank
    password ... Nested values may be retrieved via a dotted path:
    $ snap get snap-name author.name
    frank Usage: snap get [get-OPTIONS]

-t  Strict typing with nulls and quoted strings

-d  Always return document, even with single key

-l  Always return list, even with single key

  help
Show help about a command The help command displays information about snap commands. Usage: snap help [help-OPTIONS]

--all
    Show a short summary of all commands

  import-snapshot
Import a snapshot Import an exported snapshot set to the system. The snapshot is imported with a new snapshot ID and can be restored using the restore command. Usage: snap import-snapshot [import-snapshot-OPTIONS]

--abs-time

  info
Show detailed information about snaps The info command shows detailed information about snaps. The snaps can be specified by name or by path; names are looked for both in the store and in the installed snaps; paths can refer to a .snap file, or to a directory that contains an unpacked snap suitable for 'snap try' (an example of this would be the 'prime' directory snapcraft produces). Usage: snap info [info-OPTIONS]

--color <default: "auto">
    Use a little bit of color to highlight some things.

--unicode <default: "auto">
    Use a little bit of Unicode to improve legibility.

--abs-time
    Display absolute times (in RFC 3339 format). Otherwise, display relative times up to 60 days, then YYYY-MM-DD.

--verbose
    Include more details on the snap (expanded notes, base, etc.)

  install
Install snaps on the system The install command installs the named snaps on the system. To install multiple instances of the same snap, append an underscore and a unique identifier (for each instance) to a snap's name. With no further options, the snaps are installed tracking the stable channel, with strict security confinement. All available channels of a snap are listed in its 'snap info' output. Revision choice via the --revision override requires the user to have developer access to the snap, either directly or through the store's collaboration feature, and to be logged in (see 'snap help login'). Note that a later refresh will typically undo a revision override, taking the snap back to the current revision of the channel it's tracking. Use --name to set the instance name when installing from snap file. Usage: snap install [install-OPTIONS]

--color <default: "auto">
    Use a little bit of color to highlight some things.

--unicode <default: "auto">
    Use a little bit of Unicode to improve legibility.

--no-wait
    Do not wait for the operation to finish but just print the change id.

--channel
    Use this channel instead of stable

--edge
    Install from the edge channel

--beta
    Install from the beta channel

--candidate
    Install from the candidate channel

--stable
    Install from the stable channel

--devmode
    Put snap in development mode and disable security confinement

--jailmode
    Put snap in enforced confinement mode

--classic
    Put snap in classic mode and disable security confinement

--revision
    Install the given revision of a snap, to which you must have developer access

--dangerous
    Install the given snap file even if there are no pre-acknowledged signatures for it, meaning it was not verified and could be dangerous (--devmode implies this)

--unaliased
    Install the given snap without enabling its automatic aliases

--name
    Install the snap file under the given instance name

--cohort
    Install the snap in the given cohort

--ignore-validation
    Ignore validation by other snaps blocking the installation

--transaction <default: "per-snap">
    Have one transaction per-snap or one for all the specified snaps

  interface
Show details of snap interfaces The interface command shows details of snap interfaces. If no interface name is provided, a list of interface names with at least one connection is shown, or a list of all interfaces if --all is provided. Usage: snap interface [interface-OPTIONS]

--attrs
    Show interface attributes

--all
    Include unused interfaces

  known
Show 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. Usage: snap known [known-OPTIONS]

--remote
    Query the store for the assertion, via snapd if possible

--direct
    Query the store for the assertion, without attempting to go via snapd

  list
List installed snaps The list command displays a summary of snaps installed in the current system. A green check mark (given color and unicode support) after a publisher name indicates that the publisher has been verified. Usage: snap list [list-OPTIONS]

--all
    Show all revisions

--color <default: "auto">
    Use a little bit of color to highlight some things.

--unicode <default: "auto">
    Use a little bit of Unicode to improve legibility.

  login
Authenticate to snapd and the store The login command authenticates the user to 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. It's not necessary to log in to interact with snapd. Doing so, however, enables interactions without sudo, as well as some some developer-oriented features as detailed in the help for the find, install and refresh commands. An account can be set up at https://login.ubuntu.com

  logout
Log out of snapd and the store The logout command logs the current user out of snapd and the store.

  logs
Retrieve logs for services The logs command fetches logs of the given services and displays them in chronological order. Usage: snap logs [logs-OPTIONS]

--abs-time
    Display absolute times (in RFC 3339 format). Otherwise, display relative times up to 60 days, then YYYY-MM-DD.

-n <default: "10">
    Show only the given number of lines, or 'all'.

-f  Wait for new lines and print them as they come in.

  model
Get the active model for this device The model command returns the active model assertion information for this device. By default, only the essential model identification information is included in the output, but this can be expanded to include all of an assertion's non-meta headers. The verbose output is presented in a structured, yaml-like format. Similarly, the active serial assertion can be used for the output instead of the model assertion. Usage: snap model [model-OPTIONS]

--abs-time
    Display absolute times (in RFC 3339 format). Otherwise, display relative times up to 60 days, then YYYY-MM-DD.

--color <default: "auto">
    Use a little bit of color to highlight some things.

--unicode <default: "auto">
    Use a little bit of Unicode to improve legibility.

--serial
    Print the serial assertion instead of the model assertion.

--verbose
    Print all specific assertion fields.

--assertion
    Print the raw assertion.

  okay
Acknowledge warnings The okay command acknowledges the warnings listed with 'snap warnings'. Once acknowledged a warning won't appear again unless it re-occurrs and sufficient time has passed.

  pack
Pack the given directory as a snap The pack command packs the given snap-dir as a snap and writes the result to target-dir. If target-dir is omitted, the result is written to current directory. If both source-dir and target-dir are omitted, the pack command packs the current directory. The default file name for a snap can be derived entirely from its snap.yaml, but in some situations it's simpler for a script to feed the filename in. In those cases, --filename can be given to override the default. If this filename is not absolute it will be taken as relative to target-dir. When used with --check-skeleton, pack only checks whether snap-dir contains valid snap metadata and raises an error otherwise. Application commands listed in snap metadata file, but appearing with incorrect permission bits result in an error. Commands that are missing from snap-dir are listed in diagnostic messages. Usage: snap pack [pack-OPTIONS]

--check-skeleton
    Validate snap-dir metadata only

--filename
    Output to this filename

--compression
    Compression to use (e.g. xz or lzo)

  prefer
Enable aliases from a snap, disabling any conflicting aliases The prefer command enables all aliases of the given snap in preference to conflicting aliases of other snaps whose aliases will be disabled (or removed, for manual ones). Usage: snap prefer [prefer-OPTIONS]

--no-wait
    Do not wait for the operation to finish but just print the change id.

  prepare-image
Prepare a device image The prepare-image command performs some of the steps necessary for creating device images. For core images it is not invoked directly but usually via ubuntu-image. For preparing classic images it supports a --classic mode Usage: snap prepare-image [prepare-image-OPTIONS]

--classic
    Enable classic mode to prepare a classic model image

--preseed
    Preseed (UC20+ only)

--preseed-sign-key
    Name of the key to use to sign preseed assertion, otherwise use the default key

--apparmor-features-dir
    Optional path to apparmor kernel features directory (UC20+ only)

--arch
    Specify an architecture for snaps for --classic when the model does not

--channel
    The channel to use

--snap <snap>[=<channel>]
    Include the given snap from the store or a local file and/or specify the channel to track for the given snap

  reboot
Reboot into selected system and mode The reboot command reboots the system into a particular mode of the selected recovery system. When called without a system label and without a mode it will just trigger a regular reboot. When called without a system label but with a mode it will use the current system to enter the given mode. Note that "recover", "factory-reset" and "run" modes are only available for the current system. Usage: snap reboot [reboot-OPTIONS]

--run
    Boot into run mode

--install
    Boot into install mode

--recover
    Boot into recover mode

--factory-reset
    Boot into factory-reset mode

  recovery
List available recovery systems The recovery command lists the available recovery systems. With --show-keys it displays recovery keys that can be used to unlock the encrypted partitions if the device-specific automatic unlocking does not work. Usage: snap recovery [recovery-OPTIONS]

--color <default: "auto">
    Use a little bit of color to highlight some things.

--unicode <default: "auto">
    Use a little bit of Unicode to improve legibility.

--show-keys
    Show recovery keys (if available) to unlock encrypted partitions.

  refresh
Refresh snaps in the system The refresh command updates the specified snaps, or all snaps in the system if none are specified. With no further options, the snaps are refreshed to the current revision of the channel they're tracking, preserving their confinement options. All available channels of a snap are listed in its 'snap info' output. Revision choice via the --revision override requires the user to have developer access to the snap, either directly or through the store's collaboration feature, and to be logged in (see 'snap help login'). Note a later refresh will typically undo a revision override. Usage: snap refresh [refresh-OPTIONS]

--color <default: "auto">
    Use a little bit of color to highlight some things.

--unicode <default: "auto">
    Use a little bit of Unicode to improve legibility.

--abs-time
    Display absolute times (in RFC 3339 format). Otherwise, display relative times up to 60 days, then YYYY-MM-DD.

--no-wait
    Do not wait for the operation to finish but just print the change id.

--channel
    Use this channel instead of stable

--edge
    Install from the edge channel

--beta
    Install from the beta channel

--candidate
    Install from the candidate channel

--stable
    Install from the stable channel

--devmode
    Put snap in development mode and disable security confinement

--jailmode
    Put snap in enforced confinement mode

--classic
    Put snap in classic mode and disable security confinement

--amend
    Allow refresh attempt on snap unknown to the store

--revision
    Refresh to the given revision, to which you must have developer access

--cohort
    Refresh the snap into the given cohort

--leave-cohort
    Refresh the snap out of its cohort

--list
    Show the new versions of snaps that would be updated with the next refresh

--time
    Show auto refresh information but do not perform a refresh

--ignore-validation
    Ignore validation by other snaps blocking the refresh

--transaction <default: "per-snap">
    Have one transaction per-snap or one for all the specified snaps

  remove
Remove snaps from the system The remove command removes the named snap instance from the system. By default all the snap revisions are removed, including their data and the common data directory. When a --revision option is passed only the specified revision is removed. Unless automatic snapshots are disabled, a snapshot of all data for the snap is saved upon removal, which is then available for future restoration with snap restore. The --purge option disables automatically creating snapshots. Usage: snap remove [remove-OPTIONS]

--no-wait
    Do not wait for the operation to finish but just print the change id.

--revision
    Remove only the given revision

--purge
    Remove the snap without saving a snapshot of its data

  restart
Restart services The restart command restarts the given services. If the --reload option is given, for each service whose app has a reload command, a reload is performed instead of a restart. Usage: snap restart [restart-OPTIONS]

--no-wait
    Do not wait for the operation to finish but just print the change id.

--reload
    If the service has a reload command, use it instead of restarting.

  restore
Restore a snapshot The restore command replaces the current user, system and configuration data of included snaps, with the corresponding data from the specified snapshot. By default, this command restores all the data in a snapshot. Alternatively, you can specify the data of which snaps to restore, or for which users, or a combination of these. If a snap is included in a restore operation, excluding its system and configuration data from the restore is not currently possible. This restriction may be lifted in the future. Usage: snap restore [restore-OPTIONS]

--no-wait
    Do not wait for the operation to finish but just print the change id.

--users
    Restore data of only specific users (comma-separated) (default: all users)

  revert
Reverts the given snap to the previous state The revert command reverts the given snap to its state before the latest refresh. This will reactivate the previous snap revision, and will use the original data that was associated with that revision, discarding any data changes that were done by the latest revision. As an exception, data which the snap explicitly chooses to share across revisions is not touched by the revert process. Usage: snap revert [revert-OPTIONS]

--no-wait
    Do not wait for the operation to finish but just print the change id.

--devmode
    Put snap in development mode and disable security confinement

--jailmode
    Put snap in enforced confinement mode

--classic
    Put snap in classic mode and disable security confinement

--revision
    Revert to the given revision

  run
Run the given snap command The run command executes the given snap command with the right confinement and environment. Usage: snap run [run-OPTIONS] <NAME-OF-SNAP>.<NAME-OF-APP> [<SNAP-APP-ARG>...]

--shell
    Run a shell instead of the command (useful for debugging)

--debug-log
    Enable debug logging during early snap startup phases

--strace [="with-strace"] <default: "no-strace">
    Run the command under strace (useful for debugging). Extra strace options can be specified as well here. Pass --raw to strace early snap helpers.

--gdbserver [=":0"] <default: "no-gdbserver">
    Run the command with gdbserver

--trace-exec
    Display exec calls timing data

  save
Save a snapshot of the current data The save command creates a snapshot of the current user, system and configuration data for the given snaps. By default, this command saves the data of all snaps for all users. Alternatively, you can specify the data of which snaps to save, or for which users, or a combination of these. If a snap is included in a save operation, excluding its system and configuration data from the snapshot is not currently possible. This restriction may be lifted in the future. Usage: snap save [save-OPTIONS]

--no-wait
    Do not wait for the operation to finish but just print the change id.

--abs-time
    Display absolute times (in RFC 3339 format). Otherwise, display short relative times.

--users
    Snapshot data of only specific users (comma-separated) (default: all users)

  saved
List currently stored snapshots The saved command displays a list of snapshots that have been created previously with the 'save' command. Usage: snap saved [saved-OPTIONS]

--abs-time
    Display absolute times (in RFC 3339 format). Otherwise, display short relative times.

--id
    Show only a specific snapshot.

  services
Query the status of services The services command lists information about the services specified, or about the services in all currently installed snaps.

  set
Change configuration options The set command changes the provided configuration options as requested.
    $ snap set snap-name username=frank password=$PASSWORD All configuration changes are persisted at once, and only after the snap's configuration hook returns successfully. Nested values may be modified via a dotted path:
    $ snap set snap-name author.name=frank Configuration option may be unset with exclamation mark:
    $ snap set snap-name author! Usage: snap set [set-OPTIONS]

--no-wait
    Do not wait for the operation to finish but just print the change id.

-t  Parse the value strictly as JSON document

-s  Parse the value as a string

  start
Start services The start command starts, and optionally enables, the given services. Usage: snap start [start-OPTIONS]

--no-wait
    Do not wait for the operation to finish but just print the change id.

--enable
    As well as starting the service now, arrange for it to be started on boot.

  stop
Stop services The stop command stops, and optionally disables, the given services. Usage: snap stop [stop-OPTIONS]

--no-wait
    Do not wait for the operation to finish but just print the change id.

--disable
    As well as stopping the service now, arrange for it to no longer be started on boot.

  switch
Switches snap to a different channel The switch command switches the given snap to a different channel without doing a refresh. All available channels of a snap are listed in its 'snap info' output. Usage: snap switch [switch-OPTIONS]

--no-wait
    Do not wait for the operation to finish but just print the change id.

--channel
    Use this channel instead of stable

--edge
    Install from the edge channel

--beta
    Install from the beta channel

--candidate
    Install from the candidate channel

--stable
    Install from the stable channel

--cohort
    Switch the snap into the given cohort

--leave-cohort
    Switch the snap out of its cohort

  tasks
List a change's tasks The tasks command displays a summary of tasks associated with an individual change. Usage: snap tasks [tasks-OPTIONS]

Aliases: change

--abs-time
    Display absolute times (in RFC 3339 format). Otherwise, display relative times up to 60 days, then YYYY-MM-DD.

--last
    Select last change of given type (install, refresh, remove, try, auto-refresh, etc.). A question mark at the end of the type means to do nothing (instead of returning an error) if no change of the given type is found. Note the question mark could need protecting from the shell.

  try
Test 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. If snap-dir argument is omitted, the try command will attempt to infer it if either snapcraft.yaml file and prime directory or meta/snap.yaml file can be found relative to current working directory. Usage: snap try [try-OPTIONS]

--no-wait
    Do not wait for the operation to finish but just print the change id.

--devmode
    Put snap in development mode and disable security confinement

--jailmode
    Put snap in enforced confinement mode

--classic
    Put snap in classic mode and disable security confinement

  unalias
Remove a manual alias, or the aliases for an entire snap The unalias command removes a single alias if the provided argument is a manual alias, or disables all aliases of a snap, including manual ones, if the argument is a snap name. Usage: snap unalias [unalias-OPTIONS]

--no-wait
    Do not wait for the operation to finish but just print the change id.

  unset
Remove configuration options The unset command removes the provided configuration options as requested.
    $ snap unset snap-name name address All configuration changes are persisted at once, and only after the snap's configuration hook returns successfully. Nested values may be removed via a dotted path:
    $ snap unset snap-name user.name Usage: snap unset [unset-OPTIONS]

--no-wait
    Do not wait for the operation to finish but just print the change id.

  version
Show version details The version command displays the versions of the running client, server, and operating system.

  wait
Wait for configuration The wait command waits until a configuration becomes true.

  warnings
List warnings The warnings command lists the warnings that have been reported to the system. Once warnings have been listed with 'snap warnings', 'snap okay' may be used to silence them. A warning that's been silenced in this way will not be listed again unless it happens again, _and_ a cooldown time has passed. Warnings expire automatically, and once expired they are forgotten. Usage: snap warnings [warnings-OPTIONS]

--abs-time
    Display absolute times (in RFC 3339 format). Otherwise, display relative times up to 60 days, then YYYY-MM-DD.

--unicode <default: "auto">
    Use a little bit of Unicode to improve legibility.

--all
    Show all warnings

--verbose
    Show more information

  watch
Watch a change in progress The watch command waits for the given change-id to finish and shows progress (if available). Usage: snap watch [watch-OPTIONS]

--last
    Select last change of given type (install, refresh, remove, try, auto-refresh, etc.). A question mark at the end of the type means to do nothing (instead of returning an error) if no change of the given type is found. Note the question mark could need protecting from the shell.

  whoami
Show the email the user is logged in with The whoami command shows the email the user is logged in with.

NOTES

1.  Online documentation
    https://docs.snapcraft.io

BUGS

Please report all bugs with https://bugs.launchpad.net/snapd/+filebug