• dan@upvote.au
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    1 year ago

    Linux mostly doesn’t use file extensions… It relies on “magic bytes” in the file.

    Same with the web in general - it relies purely on MIME type (e.g. text/html for HTML files) and doesn’t care about extensions at all.

    • fibojoly@sh.itjust.works
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      1 year ago

      “Magic bytes”? We just called them headers, back in my day (even if sometimes they are at the end of the file)

      • dan@upvote.au
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        1 year ago

        The library that handles it is literally called “libmagic”. I’d guess the phrase “magic bytes” comes from the programming concept of a magic number?