C                 105 kernel/console.c     if(c == C('D')){  // end-of-file
C                 145 kernel/console.c   case C('P'):  // Print process list.
C                 148 kernel/console.c   case C('U'):  // Kill line.
C                 155 kernel/console.c   case C('H'): // Backspace
C                 172 kernel/console.c       if(c == '\n' || c == C('D') || cons.e-cons.r == INPUT_BUF_SIZE){