First, reset all previous folder view preferences by deleting ~/.local/share/gvfs-metadata
(source)
Next, open Nautilus and select Edit -> Preferences -> Views (tab) -> View new folders using
, and change to List View
:
The way of installing icons in Lubuntu is by going to Customize Look and Feel
:
And these sets of icons are not file-browser-specific, they would be the same in all file browsers.
As icon sets come as deb files you might try an icon-set that contains the image for your file, extract the deb, replace the file related to what you want with the one you want instead, archive as tar.gz and than replace extension to deb, and install this deb.
But I am afraid I do not know how to do this specifically for the file type you mentioned, because I am not familiar with that file. But you should know more about that.
Also a problem might be the fact that these images in the deb file are svg, not png images.
Instead of trying all this, maybe you should consider that the best way to deal with your friend would be not to show him that Ubuntu can do the same things as Windows, but that it can do a lot more, only differently. For example changing all icons very easily.
Why bother to add single file-type icon when you can get unitary-style icon sets of superior quality?
For example these monochrome ones:
or
More HERE
You might find that an icon-set you like will also change the image of the type of file you talk about to something better than you had imagined.
Best Answer
When you open file manager you get
Now go to Menu --> Accessories --> File Manager --> right click, and choose properties
Change pcmafm to nautilus and you will get
However that only changes the application that will be opened by the shortcut "file manager". It does not make
nautilus
the "default file manager" in the proper sense: Opening a folder on the desktop, or opening a file location from an application would not open nautilus, but stillpcmanfm
.Note: I will be adding information on how to make this change permanent in the next couple of days.
Note: This is my own personal opinion. I've tried these steps on my machine, and they worked. But I didn't like the outcome.
Change the contents of
/etc/xdg/lxsession/LXDE/autostart
as shown below.From
To
Also you can take a look at https://help.ubuntu.com/community/DefaultFileManager to see if it might help.
Edit:
In Ubuntu 14.04 here's what I did. I did a fresh installation of Ubuntu 14.04, and then installed LXDE. Once that was done, I set nautilus as a default file manager using the following command:
and then I checked the current default file manager using the command below:
and it showed Nautilus as the default. See image below.