The application registry contains text files that register applications. The application registration files contain a series of key-value pairs that specify details for applications. For example, the application registration files contain the following information:
An application registration file can contain one or more application registrations. Application registration files have a .applications extension.
The location of the application registry is /usr/share/application-registry. This directory contains a default application registration file that is called gnome-vfs.applications.
To register an application, add a registration file for the application to the application registry.
The following is an example of an application registration:
Table 5-3 describes the keys in application registration files.
| Key | Description |
|---|---|
| Application identifier | Specifies a unique identifier for the application. This identifier must be the same as the identifier in the short_list_application_ids_for_novice_user_level key in the MIME keys file for the application. |
| command | Specifies the command to use to start the application, and any options to use with the command. |
| name | Specifies a name for the application. The name is used in the user interface. For example, the name is used in the Open With submenu in the file manager. |
| can_open_multiple_files | Specifies whether the application can open several files at the same time. |
| expects_uris | Specifies whether the application can process URIs. If the value of this key is true, the application registration entry must also contain a supported_uri_schemes key. |
| supported_uri_schemes | Specifies the URI schemes that the application can process. |
| requires_terminal | Specifies whether to run the application in a terminal window. Enter true for this field for an application that does not create a window in which to run. |
| mime_types | Specifies the MIME types that the application can use. |