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I have many files with the file extension ".dat". I wish to assign a thumbnail to these files with this extension because the default one is of very low resolution and is disturbing when working. I figured how to change the thumbnail for specific, single files, but I would like to define the file type for all .dat files.
How do I do that?
How unfortunate. Well then... thanks anyway.
Would it help to know what the system is doing in the background when I change the thumbnail icon manually? Could it be scripted? Still, new .dat files would probably get the old thumbnail. – None – 2013-02-20T12:12:19.723
When you set a custom icon for a file, it gets added to the file metadata. Oh, BTW, I edited the answer slightly. – None – 2013-02-21T12:50:31.840