On Tue, Oct 03, 2006 at 04:55:44AM +0900, S?bastien Maurette wrote: > Hello, > > I want to replace a string in a file who is delimited by 2 other string. > My problem is to find the start and the end string delimiter and replace > the content between both. > Learn about regular expressions, and then look into the gsub method of String. You can get a very brief intro to regular expressions here: http://ruby-doc.org/docs/ProgrammingRuby/html/language.html#UJ