Identify File Type Without Extension

[SN1987a]

I have this file that has no extension (not just bcs it's hidden), so I don't know what to use to open it. Do you guys have any ideas on how to figure out what the file is?

 

[Evo]

Where are you finding the file and what is the name?

 

[Mattara]

Right Click -> Properties

:)

 

[robphy]

Get an editor that can view any file in a hex/binary format.
http://www.google.com/search?q=hex+editor

You might get a clue from looking at the start of the file.
If it's not obvious at a glance, you might have to google to learn about the various file formats.
http://www.google.com/search?q=file+format

You could also try trial-and-error... make a copy and change the extension of the copy, then try to have the default application open it. Of course, there is some danger here if your file is infected with a virus or something.

(If you have files that are somehow similar in basename or date, you may be able to guess what it is.)

 

[phibonacci]

http://gnuwin32.sourceforge.net/packages/file.htm