Almost the same way you'd change a text file.

open the file as usual, set binmode on the handle (optional on UNIX), and read the file into string(s), change the data and print it back.

Is there anything specific you're unsure about?

"What should it profit a man, if he should win a flame war, yet lose his cool?"

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

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