HowTo force thunar to create image thumbnails

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Sometimes, Thunar (XFCE's file manager) is just not creating thumbnails for images in a folder.
If that happens, the following usually does the trick:

1. Quit all Thunar instances:

   Code: Select all

   $ killall Thunar

2. Quit the thumbnailing daemon "tumbler":

   Code: Select all

   $ killall tumblerd

If you then open Thunar and locate to a folder with image files that had no preview, it will spawn tumblerd again and create the thumbnails