Michiel Overtoom wrote:
Ethan wrote:

One more option may be to attempt to rename the file -- if it's still open for copying, that will fail; success indicates the copy is done.

Caveat -- this is dependent on the operating system!

Windows will indeed not allow you to rename or delete a file that's still
open for writing by another process, at least not when the file is on a
local NTFS filesystem, but don't count on this on Unix or networked
filesystems.  There you can easily rename, move or delete a filename from a
directory whilst other processes still write to it. After all, a directory
is nothing else than a list of filenames which map to certain inodes.

Very good point.  Thanks.
~Ethan
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