I think it is an excellent utility. I was able to tar from 
the $src_host , however just when the job is about done.
I got the following error. 

tar: Unexpected EOF in archive
tar: Unexpected EOF in archive
tar: Error is not recoverable: exiting now

and if I did 

system( $cmd ) == 0 or die "tar failed"

I always got the tar failed and die.
Do you have any idea why?

thanks!