Looking for an easy way to prevent a repetitive rsync to be running
multiple times, I was wondering if it could be useful to have an option

--pidfile /some/path/rsync-mirror-org.pid

So that rsync can be run directly from cron without requiring a wrapper
script to do pidfile handling.

This way rsync on startup could check the pid-file, see if another rsync
is using this pid, and bail out with an error if it is. Otherwise clean up
the stale pidfile and continue.

I think this would be very useful to instruct mirrors how to configure it,
rather than providing some script that needs local customizations.

Thanks in advance,
-- dag wieers, dag@wieers.com, http://dag.wieers.com/ --
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