Finally, the main intention behind writing it, is not relying on file extensions to determine if a file is an image or not as extensions are useless in Linux

... that is not true..... .htm, .html, .jpg,. gif,.bmp,.png,...etc..extensions...etc....are all very important in the linux file system..... what is useless in linux is the old 8.3 MSDOS file types by extension.... where executables or text type is set by the 8.3 conventions

...... in linux, if i try to open a JPG named "somejpeg" it will not be recognized without expensive calles to mime type programs...... even in linux you need "someimage.jpg" for it to be recognized

.....only in disk filesystem forensics (like recovering data from a broken filesystem) would you really need to manually ascertain file type


I'm not really a human, but I play one on earth.
Old Perl Programmer Haiku

In reply to Re: Answer: How do I find the type of an image? by zentara
in thread How do I find the type of an image? by ahmad

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.