uname函数获取当前主机信息

 1 #include<stdio.h>
 2 #include<stdlib.h>
 3 #include<sys/types.h>
 4 #include<sys/socket.h>
 5 #include<unistd.h>
 6 #include<netinet/in.h>
 7 #include<arpa/inet.h>
 8 #include<errno.h>
 9 #include<sys/utsname.h>
10 #include<string.h>
11 #include<netdb.h>
12 
13 int main()
14 {
15     struct utsname *name;
16     name=(struct utsname *)malloc(sizeof(struct utsname));
17 
18     if(uname(name)==-1)
19     {
20         printf("error\n");
21         exit(1);
22     }
23 
24     printf("sysname= %s\n",name->sysname);
25     printf("nodename= %s\n",name->nodename);
26     printf("realease=%s\n",name->release);
27     printf("version=%s\n",name->version);
28     printf("machine=%s\n",name->machine);
29     return 0;
30 }