You need to read perldoc -f open and perldoc perlopentut as it explains all of this. Opening with any form of > clobbers the output, and any form of >> opens in append mode. If you want to update in place you need to use +<.

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In reply to Re^3: Using seek function to write out to top of file? by Fletch
in thread Using seek function to write out to top of file? by o2bwise

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