what I meant by 'File extensions is useless in Linux is this

pico -w my.anything
======= write inside it
#!/usr/bin/perl

print "Hello world\n";

=== close it (CTRL + X) & save it.
chmod +x my.anything

now you can run it ./my.anything

and it will execute your perl script.

* you can even name it my.jpg & it will execute your perl script

[download]

I am using Ubuntu Netbook, I have many images saved without extensions ... and it works that way.

In reply to Re^2: Answer: How do I find the type of an image? by ahmad
in thread How do I find the type of an image? by ahmad

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