How do I open the file manager in superuser mode in the same way as doing gksu nautilus in Ubuntu.
For your case you have the Thunar file manager in which case you would use:
If you had Kubuntu then the File manager would be Dolphin in which case you would use:
Ubuntu / Mythbuntu / Edubuntu
If you had Ubuntu you would use Nautilus as the File Manager and then would use:
If you had Lubuntu you would use PCManFM as the File Manager and then would use: