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GAPPLICATION(1) User Commands GAPPLICATION(1)
NAME
gapplication - D-Bus application launcher
SYNOPSIS
gapplication help [COMMAND]
gapplication version
gapplication list-apps
gapplication launch APPID
gapplication launch APPID [FILE...]
gapplication list-actions APPID
gapplication action APPID ACTION [PARAMETER]
DESCRIPTION
gapplication is a commandline implementation of the client-side of the
org.freedesktop.Application interface as specified by the freedesktop.org Desktop Entry
Specification.
gapplication can be used to start applications that have DBusActivatable set to true in
their .desktop files and can be used to send messages to already-running instances of
other applications.
It is possible for applications to refer to gapplication in the Exec line of their
.desktop file to maintain backwards compatibility with implementations that do not
directly support DBusActivatable.
gapplication ships as part of GLib.
COMMANDS
Global commands
help [COMMAND]
Displays a short synopsis of the available commands or provides detailed help on a
specific command.
version
Prints the GLib version whence gapplication came.
list-apps
Prints a list of all application IDs that are known to support D-Bus activation. This
list is generated by scanning .desktop files as per the current XDG_DATA_DIRS.
launch APPID [FILE...]
Launches an application.
The first parameter is the application ID in the familiar "reverse DNS" style (eg:
'org.gnome.app') without the .desktop suffix.
Optionally, if additional parameters are given, they are treated as the names of files
to open and may be filenames or URIs. If no files are given then the application is
simply activated.
list-actions APPID
List the actions declared in the application's .desktop file. The parameter is the
application ID, as above.
action APPID ACTION [PARAMETER]
Invokes the named action (in the same way as would occur when activating an action
specified in the .desktop file).
The application ID (as above) is the first parameter. The action name follows.
Optionally, following the action name can be one parameter, in GVariant format, given
as a single argument. Make sure to use sufficient quoting.
EXAMPLES
From the commandline
Launching an application:
gapplication launch org.example.fooview
Opening a file with an application:
gapplication launch org.example.fooview ~/file.foo
Opening many files with an application:
gapplication launch org.example.fooview ~/foos/*.foo
Invoking an action on an application:
gapplication action org.example.fooview create
Invoking an action on an application, with an action:
gapplication action org.example.fooview show-item '"item_id_828739"'
From the Exec lines of a .desktop file
The commandline interface of gapplication was designed so that it could be used directly
from the Exec line of a .desktop file.
You might want to do this to allow for backwards compatibility with implementations of the
specification that do not understand how to do D-Bus activation, without having to install
a separate utility program.
Consider the following example:
[Desktop Entry]
Version=1.1
Type=Application
Name=Foo Viewer
DBusActivatable=true
MimeType=image/x-foo;
Exec=gapplication launch org.example.fooview %F
Actions=gallery;create;
[Desktop Action gallery]
Name=Browse Gallery
Exec=gapplication action org.example.fooview gallery
[Desktop Action create]
Name=Create a new Foo!
Exec=gapplication action org.example.fooview create
From a script
If installing an application that supports D-Bus activation you may still want to put a
file in /usr/bin so that your program can be started from a terminal.
It is possible for this file to be a shell script. The script can handle arguments such as
--help and --version directly. It can also parse other command line arguments and convert
them to uses of gapplication to activate the application, open files, or invoke actions.
Here is a simplified example, as may be installed in /usr/bin/fooview:
#!/bin/sh
case "$1" in
--help)
echo "see 'man fooview' for more information"
;;
--version)
echo "fooview 1.2"
;;
--gallery)
gapplication action org.example.fooview gallery
;;
--create)
gapplication action org.example.fooview create
;;
-*)
echo "unrecognised commandline argument"
exit 1
;;
*)
gapplication launch org.example.fooview "$@"
;;
esac
SEE ALSO
Desktop Entry Specification[1], gdbus(1), xdg-open(1), desktop-file-validate(1)
NOTES
1. Desktop Entry Specification
http://standards.freedesktop.org/desktop-entry-spec/latest/
GIO GAPPLICATION(1)
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On Apache
Under GNU General Public License
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