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This page documents the format of the built snaps. See The snapcraft format for more information about the
snapcraft.yaml
file used to build these snaps.The VISTA’s intuitive design allows for multiple configurations, making transporting a second and third child a breeze — all while strolling like a single. Update to latest version 2 To update an installed Speakerphone to the latest version simply request a link to the downloads page and download the latest plug-in updater. The update installer will take care of updating, no need to uninstall or anything. The Conversion Pack is a comprehensive add-on to the original Battlefront II. It adds 25 new maps - including all of the maps from Battlefront 1 not originally featured in Battlefront 2, 5 new gamemodes, a new era, and a substantial amount of expanded unit content to the original game.
A snap is a Squashfs file carrying content alongside metadata to tell the system it should be manipulated. When installed, the Squashfs file for the snap is mounted read-only at the following location:
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/snap/<snap name>/<revision>/
This method delivers fast and extremely predictable installations, with no installation remnants, and no way for a snap’s content to be mutated or interfered with. A snap is either installed and available as originally built, or it is not available at all.
Applications declared in the snap become commands at:
/snap/bin/<snap name>[.<app name>]
The suffix is omitted if
<app name>
matches <snap name>
.That snap command file is not the actual application, but rather a link to the real application under the isolation and confinement rules of the snap’s default restricted environment, plus any allowances granted to it via the interface system.
Setup files
The following files control the behaviour of a snap:
meta/snap.yaml
: Basic snap details (see below)meta/hooks/
: Hooks called on specific events (see below)meta/gui/icon.{svg,png}
: Icon for the snapmeta/gui/*.desktop
: Desktop files for the snap (see below)
snap.yaml
Every snap package contains a
meta/snap.yaml
file that holds the basic metadata for the snap.Please take note of this important distinction:
- snap.yaml lives inside every snap package, read by snapd
- snapcraft.yaml contains instructions to create a snap package, read by the snapcraft command used to build snaps
Most of the metadata supported by snap.yaml is optional. In fact, the simplest
snap.yaml
could contain as little as the following:An example snap.yaml that offers an application to run is still very simple:
The following is the complete specification for the metadata in snap.yaml:
Hooks
Hooks provide a mechanism for snapd to alert snaps that something has happened, or to ask the snap to provide its opinion about an operation that is in progress. See the topic on supported hooks for more details.
Interfaces
Interfaces allow snaps to communicate or share resources according to the protocol established by the interface. They play an important part in security policy configuration.
![2.0 2.0](https://suncoastdiesel.com/images/F198647578.jpg)
See Supported interfaces for more details.
Layouts
Layouts enable snap developers to modify the execution environment of their snap. They simplify the process of using pre-compiled binaries and libraries that expect to find files and directories outside of locations referenced by $SNAP or $SNAP_DATA.
For more details, see Snap layouts.
Desktop files
The
meta/gui/
directory (snap/gui/
with snapcraft) may contain *.desktop
files for the snap. These desktop files may contain valid desktop entries from the XDG Desktop Entry Specification version 1.1 with some exceptions listed below. Lines with unknown keys are silently removed from the desktop file on install.The Exec= line must use the following syntax:
Exec=<snap name>[.<app name>] [<argument> ..]
My metronome 1 1 15. As in the executables contained under
/snap/bin
, the .<app name>
Design email template. suffix is omitted if the application name and snap name are the same.For example, assuming this content in
snap.yaml
:![Snap converter v2 2.0 Snap converter v2 2.0](https://snap-on-products.imgix.net/EEHD86.jpg)
… the following desktop file would be valid:
Autostart desktop files⚓
An application may put a desktop file under
$SNAP_USER_DATA/.config/autostart
in order to be automatically started with the user’s desktop session. The file is matched with a corresponding application based on the autostart
property of an app inside meta/snap.yaml
. For example:Snap Converter V2 2 0
Air buddy 1 3 trailer. Assuming
my-chat
has written a file $SNAP_USER_DATA/.config/autostart/my-chat.desktop
with the following contents:The Exec= line is used to obtain any command line parameters, and the application will be started as:
Snap Converter V2 2 Firmware
Unsupported desktop keys
Snap Converter V2 2 Software
The
DBusActivatable
, TryExec
and Implements
keys are currently not supported and will be silently removed from the desktop file on install.