On 2016-02-27, Frank Cox <theatre at melvilletheatre.com> wrote: > On Sat, 27 Feb 2016 16:33:00 -0500 H wrote: > >> No, that I already did. I am talking about the file type when you >> open a graphical directory window. > > I'm missing something here. Do you mean that you want to change icon > that shows up in a Nautilus window for a particular filetype? > I think the OP is talking about the file type that Nautilus reports when you right-click on a file and bring up the 'Properties' dialog. In my case (also CentOS 6) Naulitus reports 'Genesis ROM' for files with the .md extension. The file command, on the other hand, reports 'ASCII English text'. The file responsible for the behaviour of Nautilus is /usr/share/mime/application/x-genesis-rom.xml, which appears to have been generated by update-mime-database. -- Liam