uname.c

/**
   @file      uname.c
   @author    Mitch Richling <http://www.mitchr.me/>
   @Copyright Copyright 1994 by Mitch Richling.  All rights reserved.
   @brief     How to use uname@EOL
   @Keywords  unix uname
   @Std       ISOC 
   
              This is an example program intended to illustrate how to
              use the POSIX function uname.

   @Tested    
              - MacOS X.4

*/

#include <sys/utsname.h>        /* uname           POSIX */
#include <errno.h>              /* error stf       POSIX */
#include <stdio.h>              /* I/O lib         ISOC  */
#include <stdlib.h>             /* Standard Lib    ISOC  */

int main(int argc, char *argv[]);

int main(int argc, char *argv[]) {
  struct utsname utsnameStructVar;

  if(uname(&utsnameStructVar) == -1) {
    printf("ERROR(%d): uname failed.\n", (int)errno);
  } /* end if */

  /* Note that the nodename and sysname may NOT be enough to identify
     the host on a network -- i.e. they may not even be related to the
     hostname, but it generally is. */
  printf("sysname(-s):  %s\n", utsnameStructVar.sysname);
  printf("nodename(-n): %s\n", utsnameStructVar.nodename);
  printf("release(-r):  %s\n", utsnameStructVar.release);
  printf("version(-v):  %s\n", utsnameStructVar.version);
  printf("machin(-m):  %s\n", utsnameStructVar.machine);

  return 0;
} /* end func main */