I'm using ubuntu 7.10 and i want to change icon for all files of a particular type for example all pdf files.Is this possible?If so can someone please help me do that?

Are you using gnome, and talking about the icon which appears in nautilus (the file browser)?

If so, I think the default behaviour is to render a small preview of the first page of the document for the icon view. Do you just want to prevent this?

You can prevent it using gconf-editor (press alt-f2 and enter "gconf-editor" in the dialog). Then search for pdf and in the settings, change "enable" to false:

• /desktop/gnome/thumbnailers/application@pdf
• /desktop/gnome/thumbnailers/application@x-bzpdf
• /desktop/gnome/thumbnailers/application@x-gzpdf

I am not sure how to change the default icon for a PDF after the preview is disabled though, but I am not a gnome user - I'm sure someone out there knows.

I think that certain icon choices are built-in to Gnome, so you'd have to alter and recompile the source to fix that!

The crafty way, which I've used on occasion, is to find the icon that Gnome is using -- search for a file pdf.png in your case. Then you can replace that by one that you prefer and Gnome will be none the wiser.

Thanks for your suggestions.I replaced the icons in the theme folder and the icons have changed.