From: Marc Heiler <shevegen@...>
Date: 2008-06-26T03:17:35+09:00
Subject: Re: Deleting a line in a file

This should get you started. There are probably 1000 ways but well,
someone else can do that :)

The test_file had this content:
a
b
c
d

The new_file has
a
b
d


class DeleteLine
  def initialize(read_this_file = 'test_file')
    @file = File.readlines(read_this_file)
    delete_line 3
    save_to
  end
  def delete_line(which_line = 1)
    @file.delete_at(which_line-1) # we may count first line as 1, second 
line as 2 etc.. otherwise remove the -1 part
  end
  def save_to(this_file = 'new_file')
    File.open(this_file, 'w+') {|f| f.write @file.join() }
  end
end

DeleteLine.new
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