Is file finished writing? Can't use foo.lock!

[David Jacopille]

Unfortunately it's not my process that's writing the file.  I tell the 
page layout application to print-to-pdf which spools the job followed 
by another application: the system's "Print Monitor" launching and 
actually processing the job to postscript - and that application can 
keep running with hundreds of files in the spool so merely waiting for 
the application to quit/idle could take forever.

While the foo.lock is a good idea I would still have to somehow detect 
that the system's "Print Manager"  is done writing the file to know 
when to remove the foo.lock - which means I'm back to needing the 
ability to ask ask when the file is finished writing.  If I can 
successfully do that I wouldn't need the foo.lock.

Thanks,
Dave
On Mar 23, 2005, at 11:35 PM, JupiterHost.Net wrote:

David Jacopille wrote:
I'm looking for some strategies to determine when other applications 
are finished writing a file.  I've got a script printing page layout 
files to postscript in rapid fashion.  I'd like to move the 
postscript to another location for some additional modifications as 
fast as possible.  I can't figure out how to have my perl script NOT 
move those postscript files that are in the process of being written.

make foo.lock when you open foo to work on and remove foo.lock when 
you're done.

don't open it if the foo.lock exists
Search cpan for file and lock file tools
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