[tlug] Perl Q: how to check if a file is "busy"

["Jean-Christian Imbeault" <jean_christian@example.com>]

I wrote a very simple perl program to mv some files around. But 
unfortunately it cannot tell when a file it is tryig to "mv" is currently 
being written to and shouldn't be moved until it is no longer bing written 
to.

I've had a look at Perl's flock but it didn't quite seem to work.

What are some mechanisms I can use to wait until a file is "free" before 
mv'ing it? Are there any system calls I could us that do this?

Jc

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