syntax [grep/tee]

[Hugh Saunders <hugh@mjr.org>]

hello, a couple of fairly simple bashish questions:

1. whats the advantage of using |tee -a rather than >> ?

2. how can i consolidate |grep -v from |grep -v archive?
- i think it should be something like |grep -v \(archive|from\) but that
  doesnt seem to work..

thanks :)

-- 
hugh