/usr/share/url-dispatcher/urls/gallery-app.url-dispatcher is in gallery-app 0.0.67+16.04.20160323.1-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | [
{
"protocol": "photo"
}
]
|