From: ts Date: 2001-03-03T15:28:40+09:00 Subject: [ruby-talk:11924] Re: rewrite with Ruby >>>>> "H" == Hugh Sasse Staff Elec Eng writes: H> If you have already created the copy what does this get you? I H> don't recall mmap.... -i make inline editing : it copy the file then all modifications are made on the file. mmap map a file in memory, i.e. you have the methods of the strings but the modifications are made directly in the file. You don't need to read a line, make a modification, save the line, etc mmap can be usefull when you need to work with very big file. Guy Decoux