Do stty -a and have a look at the output. Do `man stty` for the whole gory story. Raw means send characters immediately, literally. Cooked imply some some of

Do stty -a and have a look at the output. Do `man stty` for the whole gory story. Raw means send characters immediately, literally. Cooked imply some some of the flags are on, specifically (from memory) icanon, echo, among the `lflags`. Plus others. Further down among `cchars` you'll see werase = ^w and kill = ^u. Here kill means kill (erase) the line, not send a signal.