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 }
