: What would be a good way of extracting text which falls between two
: given strings from a file?

: e.g. in this post I want to extract text between say, "Hi" and "--".

: Thanks.
: --
  ^^^

it's quite obvious what you think you need it for:
you wold need quite an intelligent program to distinguish any greetings
from other lines  
but perhaps it can be easier  just to grep out  those lines that begin
with Subject, Newsgroups, or References ...