want firefox to use dolphin as default file manager?

When I installed KDE and Firefox this feature actually worked – I downloaded a file, clicked on “open containing folder”, and Dolphin would happily pop with the respective folder open.
However, when I installed a few more apps, Firefox started calling Gwent or other app to “open the folder”.

you can edit inodes in a file choose how downloads in forefox are opened for exploration!


Solution:

edit this file to configure or customize to your choice!

Code:

sudo gedit /usr/share/applications/mimeinfo.cache

now find

Code:

inode/directory

and make

Code:

kde4-dolphin.desktop

on first such as:

Code:

inode/directory=kde4-dolphin.desktop;kde4-gwenview.desktop;kde4-kfmclient_dir.desktop;

Code:

Do the same for the following file!
sudo gedit /etc/gnome/defaults.list