Kubuntu Saucy File Managers


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Kubuntu Saucy File Managers
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File Managers

  • For FTP (online File Transfer Protocol):
Also see these FTP tips.
  • For WebDAV (online folders):


K menu -> System -> Dolphin
  • Many folders and files, especially system folders and configuration files, have root permissions associated with them. It is necessary to start Dolphin with root privileges in order to access them:
kdesudo dolphin
A menu item can be created with this command.
  • When opening the Dolphin file manager in this way, the default folder will be /root/. User files will be found by clicking on the "Root" icon and then navigating to the /home/user/ folder(s).

Add services to the Dolphin file manager

Context-sensitive services can be added to Dolphin.

  • Ruby must be installed first:
sudo apt-get install ruby
  • Add new services.
Dolphin -> Settings -> Configure Dolphin... -> Services -> Download New Services...
  • For example, a very useful service is the "Root Actions Servicemenu", which allows many functions to be performed with root (superuser or "sudo") permissions. This is necessary, for example, for editing text files that have root permissions.
  • The "Scan with ClamAV" service allows the anti-virus scanner to be run from Dolphin.
  • Once the new services have been installed, the system must be rebooted for the newly added service menus to appear in Dolphin.
  • <Right-click> on an item within Dolphin to bring up the services menu. For example, once the Root Actions Servicemenu has been installed, I can edit a text file with root permissions by <right-clicking> on it and selecting
Root Actions -> Open as text

This will open the text editor (kate) as root.

  • Other popular service menus include audiokonvertor, Extract and Compress, servicemenu-pdf, image2pdf, and vlcappend.
  • Many service menus in development can be found here.

Preview video files with Dolphin file manager

  • FFMpegThumbs uses FFMPEG to create thumbnail frames from video files, which can be used by KDE from a file manager like Dolphin. Install:
sudo apt-get install ffmpegthumbs
Alternatively, install kFFMpegThumbnailer (sudo apt-get install kffmpegthumbnailer), which works in a similar manner. (Both require FFMPEG to be installed.)

After installation of either of these modules, log out and log back into (or restart) your system for changes to take effect.

  • MPlayerThumbs not only shows a video frame thumbnail in Dolphin, it also has the capacity to show the entire video in the Dolphin Information side panel (for previewing). Though more powerful, it is slower to load than either FFMpegThumbs or kFFMpegThumbnailer. (MPlayer must also be installed for this thumbnailer / previewer to function.) Install:
sudo apt-get install mplayerthumbs

After installation, log out and log back into (or restart) your system for changes to take effect.

  • Make sure the settings for Dolphin allow JPG and Video previews:
Dolphin -> Settings -> Configure Dolphin... -> General -> Previews -> JPEG Images (ticked) -> Video Files (ticked) -> OK
-> View -> Preview (ticked)

Close and re-open Dolphin for changes to take effect.

  • If you wish information about the file to be displayed while the cursor hovers over the filename, also make sure Dolphin "tooltips" is enabled:
Dolphin -> Settings -> Configure Dolphin... -> General -> Behavior -> Show tooltips (ticked)
-> View -> Panels -> Information (ticked)

MTP through USB

Many MP3 players, as well as the latest Android devices, use MTP (Media Transport Protocol) for transferring data to the device storage.

  • In KDE (Kubuntu), enable MTP capabilities by installing the kio-mtp package:
sudo apt-get install kio-mtp
After installation, the device should appear in the Dolphin (or Konqueror or Rekong) file manager when the USB cable is plugged in.
  • Troubleshooting Android device connectivity: As a security precaution the newest Android devices do not have USB transfer capabilities turned on by default. It is necessary to carefully consult your device's user manual to find the method for enabling USB transfers (also known as "USB debugging mode" on many devices). For example, on my device, it was necessary to tap the "Settings -> About phone -> Build #" button 7 times to merely enable the USB debugging option, and then enable "Settings -> Developer options -> USB debugging" as a separate step!

WebDAV folders with Dolphin

  • Dolphin uses the same network proxy settings as Konqueror (or Rekonq). If there is trouble connecting to any online resource or folder with Dolphin, so that this error appears:
Could not connect to host:
Connection to proxy refused.

then check the Network Settings (or the proxy settings of Konqueror/Rekonq) and then make sure that Konqueror/Rekonq connects to the Internet successfully.

Settings -> System Settings -> Network and Connectivity: Network Settings -> Proxy -> No proxy (ticked) -> Apply
Konqueror -> Settings -> Configure Konqueror... -> Web Browsing: Proxy -> No proxy (ticked) -> OK
Rekonq -> Settings wrench icon -> Configure rekonq... -> Network -> Proxy -> No proxy (ticked) -> OK

Of course, if you are using a proxy, make sure that the proxy settings are correctly specified and that the proxy is working. When Konqueror (or Rekonq) connects successfully to the Internet, so should Dolphin.

Plasma Media Center

Plasma Media Center provides a media center interface for the KDE desktop useful for watching videos, listening to music, browsing photos, or streaming YouTube. See this section.


Konqueror is a KDE-integrated web browser that can also be used as a file manager. In addition to having tabbed browsing capabilities, it can transparently access FTP and SFTP servers, zip files (and other archives), and smb (Windows) shares, and can even browse and rip audio CDs. It is extensible and customizable through a system of plugins.

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