input 456 usr/bin/sh/sh.c int input;
input 469 usr/bin/sh/sh.c input = 0;
input 479 usr/bin/sh/sh.c input = open(argv[1], O_RDONLY);
input 480 usr/bin/sh/sh.c if (input < 0) {
input 486 usr/bin/sh/sh.c cmdloop(input);