sta/disk_occ.c

#include <stdio.h>

int main()
{
    FILE *fp;
    int h = 0;
    char buffer[80], a[80], d[80], e[80], f[80], buf[256];
    double c, b;
    double dev_total = 0, dev_used = 0;
    float occupy;

    fp = popen("df", "r");
    fgets(buf, 256, fp);

    while (6 == fscanf(fp, "%s %lf %lf %s %s %s", a, &b, &c, d, e, f))
    {
        dev_total += b;
        dev_used += c;
    }
    occupy = dev_used / dev_total * 100;
    printf("occupy:%f\n", occupy);
    pclose(fp);
    return occupy;
}