获取每个网卡流量 

 1 #include <stdio.h>
 2 #include <string.h>
 3 
 4 int main(void)
 5 {
 6     FILE *fp;
 7     char line[512], tmp[256];
 8     char *receive_flowrate, *transmit_flowrate, *net_card_name;
 9     long total_count_flowrate[10];
10     int count = 0, i = 0, net_card_num = 0;
11 
12     fp = popen("cat /proc/net/dev | grep -v \"|\" | awk \'{split($1,b,\":\");print b[1]\" \"$2\" \"$10 }\'", "r");
13     if (fp == NULL) {
14         printf("read /proc/net/dev FAILURE!\n");
15         goto error;
16     }   
17 
18     memset(tmp, '\0', sizeof(tmp));
19     memset(line, '\0', sizeof(line));
20     while (fgets(line, sizeof(line), fp)) {
21         i = 0;
22         while (line[i] != '\0') {
23         // while (line[i++]) {
24             if (isspace(line[i])) {
25                 line[i] = '|';
26                 count++;
27             }   
28             i++;
29         }   
30         strncat(tmp, line, strlen(line));
31     }   
32     printf("tmp : %s\n", tmp);
33 
34     net_card_name = strtok(tmp, "|");
35     for (i = 0; i < count / 3; ++i) {
36         receive_flowrate = strtok(NULL, "|");
37         transmit_flowrate = strtok(NULL, "|");
38         net_card_name = strtok(NULL, "|");
39 
40         total_count_flowrate[i] = atol(receive_flowrate) + atol(transmit_flowrate);
41         printf("total_count_flowrate : %ld\n", total_count_flowrate[i]);
42     } 
43     net_card_num = i;
45 error:  
46     return 0;
47 }

 

posted @ 2018-11-23 14:07  insistYuan  阅读(251)  评论(0)    收藏  举报