linux c 获取硬件信息

#include <stdio.h>
#include <stdlib.h>

void get_cpu_info() {
    FILE *fp;
    char buffer[256];
    fp = popen("cat /proc/cpuinfo", "r");
    if (fp == NULL) {
        printf("Failed to run command\n" );
        exit(1);
    }
    while (fgets(buffer, sizeof(buffer), fp) != NULL) {
        printf("%s", buffer);
    }
    pclose(fp);
}

int main() {
    get_cpu_info();
    return 0;
}

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <unistd.h>

void get_network_info() {
    struct ifreq ifr;
    int sockfd = socket(AF_INET, SOCK_DGRAM, 0);
    strncpy(ifr.ifr_name, "eth0", IFNAMSIZ-1);
    if(ioctl(sockfd, SIOCGIFHWADDR, &ifr) == 0) {
        printf("MAC: %02x:%02x:%02x:%02x:%02x:%02x\n",
               (unsigned char)ifr.ifr_hwaddr.sa_data[0],
               (unsigned char)ifr.ifr_hwaddr.sa_data[1],
               (unsigned char)ifr.ifr_hwaddr.sa_data[2],
               (unsigned char)ifr.ifr_hwaddr.sa_data[3],
               (unsigned char)ifr.ifr_hwaddr.sa_data[4],
               (unsigned char)ifr.ifr_hwaddr.sa_data[5]);
    }
    close(sockfd);
}

int main() {
    get_network_info();
    return 0;
}