Well, you got good answers to a very open ended and nebulous question. Generally however it helps if you provide a context and very often sample code. For a quick "Can Perl ..." question you will find that the Chatter Box is an excellent resource (you have to register, but PerlMonks doesn't require money to change hands).

DWIM is Perl's answer to Gödel

In reply to Re: Change Binary File by GrandFather
in thread Change Binary File by Anonymous Monk

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