/usr/share/kde4/apps/plasma-netbook/init/00-defaultLayout.js is in plasma-netbook 4:4.8.5-0ubuntu0.4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | loadTemplate("org.kde.plasma-netbook.defaultSal")
loadTemplate("org.kde.plasma-netbook.defaultPanel")
loadTemplate("org.kde.plasma-netbook.defaultPage")
|