prevent simultaneous copies?

[Bob Bagwill]

Would it be worthwhile to have an option to check for the presence of the 
temporary dot file in the target directory and to warn the user that the 
file is already being transfered?  Something like:  --skip-in-progress-files ?

We usually transfer files via a cron job, but sometimes impatient people 
try to push stuff out, not knowing the file is already being copied, and 
disk space and bandwidth is temporarily wasted. If they are copying big 
files to a small filesystem, there's a danger that the two big temp files 
may fill up the filesystem, preventing either from completing.

--
Bob Bagwill <mailto:bagwill at nist.gov>