From: "Ralf Müller" <r_mueller@...>
Date: 2005-05-04T21:08:19+09:00
Subject: writing to a file with gsub!

Hi,

i simply want so change an existing file

ram@lilith:~/src/ruby$cat test
123 wer ---
245545 hzrzu ----
245 dfgdfh --


and i thought that

irb(main):012:0> file = File.open('test');  file.each do |line| line.gsub!(/\d+/,'###') end

would do this, because each iterates accross the file. 
But nothing is changed.

Where are my mistakes??


Many Thanks
Ralf