xsub

Right now I have file cp.sub which contains many pip b:=a:something lines. When I run "submit cp" it copies all the files to B: drive. The problem is, pip is loaded every time for each file which is very slow. XSUB might enable me to load pip into memory and then feed only file names to the pip, I hope. Can anyone give me an example please?

Is it also possible to ask user after a bunch of files if next bunch should be copied to make the copying more customizable?