Re: append data / locks

On Jun 12, 6:28 am, slin...@xxxxxxxxx wrote:
Hello,

I have several scripts that are using the redirection operator >> to
append data to a masterfile.

I now want to ensure that the masterfile is only opened by one script
at a time.
I assume I can solve this somehow by locks - but then I would need to
check if the file is not already open and set a lock at the same time.
Is there a way to do this?
or any other ideas?

Thanks,
Sven

Check out this link, it provides a couple of unsafe (i.e. potential
race conditions) solutions and a more complex solution which the
author believes is safe.

http://www.unixreview.com/documents/s=9040/ur0402g/


.

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