#include #include #include #include #include #include #include int touch(const char *path) { int fd = open(path, O_CREAT | O_RDONLY, 0666); if (fd < 0) { fprintf(stderr, "touch: %s\n", strerror(errno)); return 1; } close(fd); struct utimbuf new_time; time_t now = time(NULL); new_time.actime = now; new_time.modtime = now; if (utime(path, &new_time) < 0) return 1; return 0; } int main(const int argc, const char **argv) { if (argc == 1) { printf("touch: missing operand\n"); return 1; } for (int i = 1; i < argc; i++) if (touch(argv[i])) return 1; return 0; }