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POHow can I test whether a csv file is currently open and being written to - the file, not a file handle - with Perl?
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2010-05-25T15:39:35.413
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2013-07-04T15:43:13.723
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2013-07-04T15:43:13.723
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I've got a Clipper system writing csv files to a Windows directory. I have a Perl script running on a Linux server that is reading a mount of that Windows directory and importing the files to a database. Right now we're using flag files to indicate when a csv is no longer being written to; the flag file gets written after the csv is done. I'd really rather just get what I need from the csv itself, but I can't seem to find a way to tell when the file is open and being written to. <code>lsof</code> doesn't seem to answer my need. I've tried using <code>flock</code> and open the file with an exclusive lock, thinking it might throw an error if the file is being modified, but it doesn't. Any thoughts?
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How can I test whether a csv file is currently open and being written to - the file, not a file handle - with Perl?
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1. USHenry
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1. COYou will find that all solutions to this are operating system specific. Using a separate file's existence is about as clean a solution as you'll find.
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 POHow can I test whether a csv file is currently open and being written to - the file, not a file handle - with Perl?
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 USjmucchiello
2. COThat's pretty much what I've decided.
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