From: Farley Flud <ff@linux.rocks>
Subject: Re: Something I Never Fucking Knew
Newsgroups: comp.os.linux.advocacy
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On 22 Jun 2024 09:49:00 GMT, Stéphane CARPENTIER wrote:

> Le 22-06-2024, candycanearter07 <candycanearter07@candycanearter07.nomail.afraid> a écrit :
>>
>> Well, it's a common technique. I've seen plenty of "fake file
>> extensions" that just use an existing format. Of course, you can easily
>> tell by looking at the magic number on the file.
> 
> You can, he can't. "File" is a too difficult command for him.
> 

You are both totally incorrect.  The "file" command reports only
that is an epub file:

file Aspirin.epub

Aspirin.epub: EPUB document

If I change the suffix to "zip" it still shows "EPUB document."


file Aspirin.zip

Aspirin.zip: EPUB document


Using a hex editor, the magic number is that of zip:

50 4B 03 04

The file, even if not renamed, can also be unzipped.

Let's see y'all explain this behavior.