#include <stdio.h> #include <sys/utsname.h> main(void) {  struct utsname myname;  uname(&myname);  printf ("SYS_NMLN = %d\n", SYS_NMLN);   printf ("The OS name is %s\n", myname.sysname);  printf ("The name of machine is %s\n", myname.nodename);  printf ("The OS version is %s, %s\n", myname.release, myname.version);  printf ("The hardware type is %s\n", myname.machine); }