From: William James <w_a_x_man@...>
Date: 2005-12-02T00:42:48+09:00
Subject: Re: What is the best way to edit a file to eliminate a line

Mike Fletcher wrote:
> steve_rubytalk wrote:
> > William James wrote:
> >> ruby -i.bak -ne 'print if $_ !~ /foo/' stuff.txt
> > Coo... that's a new one to me... very nifty.
> >
> > Unfortunately, I mislead you... I want to transform a file from within a
> > cgi script... which means I need to use standard out to generate other
> > feedback to the user.  Is a similar facility available within a ruby
> > program without executing a new ruby process?
>
> File.new( "stuff.txt" ) do | f |
>   f.each do |line|
>     print unless line =~ /foo/
>   end
> end

IO.foreach('stuff'){|s| print s unless s =~ /foo/}