Изменить файловый диспетчер по умолчанию Ubuntu Gnome Linux

# To view the current default for opening directories:
xdg-mime query default inode/directory

# To set Dolphin as default:
xdg-mime default org.kde.dolphin.desktop inode/directory

#To set Thunar as default:
xdg-mime default thunar.desktop inode/directory

Smoggy Skimmer