[p4] Determining which files a user has checked in between two dates

[Mark Allender]

I'd like to be able to script retrieval of files that have only changed
between specific times from the depot.  Additionally, I'd like to be
able to do it on a per user basis.  What I have is a situation where we
have a time/date (we'll call T) which we'd like users to sync to.  Then
we'd like to sync only their changes since that time T.

I could do something like

p4 changes -u user //depot/... at T, at new_time

And then grab the changelist number and do

p4 sync //... at changelistnum, at changelistnum

(I think that's right).

I was hoping there might be something that would be, um, more "windows"
friendly since I don't have the luxury (at least today) of having handy
tools like grep, sed, and awk on the 200+ development machines that we
have here.  

I've hit a wall here and am wondering if perhaps I'm missing something
obvious.  Thanks in advance.