I've recently came back to Ubuntu from Kubuntu, but I really like Dolphin. Is there any way how to set it up as default file manager?
6 Answers
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
Run either on the terminal as regular user. If you want to set the default to another file manager, install the file manager, and find the correct .desktop
file by searching in /usr/applications/
on the command-line.
Related files:
/usr/share/applications/defaults.list
system-wide defaults$HOME/.local/share/applications/mimeapps.list
$HOME/.config/mimeapps.list
wherexdg-mime
saves configuration
Sources:
Steps:
Open a terminal, e.g. using Ctrl+Alt+T
Install
exo-utils
by running the following command in the terminal:sudo apt-get install exo-utils
Run the following command in the terminal:
exo-preferred-applications
In the window that opens, click on Utilities
On the File Manager section, click the drop-down menu arrow + Other...
Find
/usr/share/applications
directoryAdjust to show all files and select
dolphin.desktop
(wherever you find it)Click close

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8Not working: exo-preferred-applications /usr/bin/exo-preferred-applications: 11: exec: /usr/lib/x86_64-linux-gnu/xfce4/exo-1/exo-helper-1: not found – tribbloid Aug 30 '17 at 18:28
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1@tribbloid -- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=892010 -- At step 2, use
sudo apt install libexo-1-0 exo-utils
– loxaxs Apr 14 '18 at 16:23 -
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Adding to Rucent88 answer:
For me the dolphin desktop file was stored in /usr/share/applications/org.kde.dolphin.desktop
. So
xdg-mime default org.kde.dolphin.desktop inode/directory
did the trick.
Keep in mind to have a look where the desktop link is located. Have a look at the file list of your installed file manager to see how the desktop link is called if you can't find it.

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also it works only with:
xdg-mime default dolphin.desktop inode/directory application/x-gnome-saved-search
From: http://www.fandigital.com/2013/01/set-nemo-default-file-manager-ubuntu.html
In My, Ubuntu 20.04.2 LTS below solution worked. Not sure, is there are any consequences for this approach.
In file /usr/share/applications/defaults.list
modified entry inode/directory=org.gnome.Nautilus.desktop
to inode/directory=org.kde.dolphin.desktop

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As exo-preffered-applicatiosn from exo-utils have been depreciated and moved to xfce4-settings. Use the following steps:
- Open the terminal
Ctrl+Alt+T
. - Install xcfe4-settings
sudo apt install xfce4-settings
- Type
xfce4-mime-settings
in terminal. - A window will appear, click on Utilities in it.
- Go to File Manager section and click on others
- Open /usr/share/applications directory and set from exectuable files to all files.
- Select for org.kde.dolphin.desktop and open it.
- Close
pcmanfm.desktop
. – Aaron Franke Dec 15 '16 at 06:28