Sorry,
First, I should have said "I want to delete everything in a line up to the last "/" character.
Second, I want to do it interactively, but repeatedly. That is to say, press "." and have it do it again.
e.g. If I want to delete 5 lines at a time I use "5d", for the next 5 I use "." Sometimes I need to move my cursor down a few lines and skip a few. Then I press "." again and magically 5 more lines get deleted.
Same concept, but with d up to "/" is what I'm looking for.
Thanks,
Jeff
P.S. I have tried man vi, but I couldn't figure out how to do this from the man page.