- File Upgrades. Upgrading the CygWin DLL is difficult. It cannot be
done while any CygWin executable is running. In fact, any file currently
open cannot be upgrade. This means that all daemons must be totally
stopped during the procedure, but it also makes it difficult to upgrade
the upgrader. How do we deal with that? Perhaps an external, self-
contained program that reads a list of files that must be moved and
does it at the first opportunity, trying every few seconds until there
are no more files to process?