The sysseek documentation says:

Returns the new position, or the undefined value on failure. A position of zero is returned as the string "0 but true"; thus sysseek returns true on success and false on failure, yet you can still easily determine the new position.
DWIM is Perl's answer to Gödel

In reply to Re: Problem with sysseek by GrandFather
in thread Problem with sysseek by Chon-Ji

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