master boot record

Jonas Norlander jonorland at
Wed Feb 13 15:22:54 UTC 2008

On Feb 13, 2008 4:04 AM, Andrew Jarrett <jarrett.andrew at> wrote:
> On Feb 12, 2008 4:58 PM, J. Michael Morse <mmorse757 at> wrote:
> > Don't let the file extension mislead you.  I don't think Linux really
> > uses file extensions.  The file ends in .lst and not .txt but it is
> > still a text file.
> That's correct, file extensions are pretty much trivial and really are
> only there to help the user in figuring out what a file does.  And if
> that doesn't blow your mind, how about this:
> In Linux, everything is a file... even folders are files.
> Andrew

Just a comment:
You are right that file extensions has no purpose on Linux.
But folders are files on many file systems for example FAT
uses a special file to store metadata, name, extension, attributes etc. for
the files in that folder so it's nothing specially just for Linux it's
more about
the type of file system used.
What you want to point out i guess, is probably that all devices/hardware i.e.
keybord, mouse, soundcard is a file in linux and you can write and read to
them through the file system.


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