struct utname结构体使用

#include <sys/utsname.h>
extern int uname (struct utsname *__name)

struct utsname
{ char sysname[_UTSNAME_SYSNAME_LENGTH];//当前操作系统名
char nodename[_UTSNAME_NODENAME_LENGTH];//网络上的名称
char release[_UTSNAME_RELEASE_LENGTH];//当前发布级别
char version[_UTSNAME_VERSION_LENGTH];//当前发布版本
char machine[_UTSNAME_MACHINE_LENGTH];//当前硬件体系类型
#if _UTSNAME_DOMAIN_LENGTH - 0
/* Name of the domain of this node on the network.  */
# ifdef __USE_GNU
char domainname[_UTSNAME_DOMAIN_LENGTH]; //当前域名
# else
char __domainname[_UTSNAME_DOMAIN_LENGTH];
# endif
#endif
};

#include <sys/utsname.h>
#include <stdio.h>
#include <stdlib.h>

int main()
{
struct utsname uinfo;
int ret=0;

ret=uname(&uinfo);
if(ret<0)
{
fprintf(stderr,"uname");
return -1;
}else
{
printf(" sysname:%s\n nodename:%s\n release:%s\n version:%s\n machine:%s\n \n ", uinfo.sysname, uinfo.nodename, uinfo.release, uinfo.version, uinfo.machine);
#if _UTSNAME_DOMAIN_LENGTH - 0
# ifdef __USE_GNU
printf(" domainame:%s\n ",uinfo.domainname);
//char domainname[_UTSNAME_DOMAIN_LENGTH]; //当前域名
# else
printf(" __domainame:%s\n ",uinfo.__domainname);
//char __domainname[_UTSNAME_DOMAIN_LENGTH];
# endif
#endif

}
return 0;
}

sysname:Linux
nodename:backup
release:2.6.9-89.EL
version:#1 Mon Apr 20 10:23:08 EDT 2009
machine:i686

domainame:(none)