linux network manager

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#!/bin/bash

echo hi

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#include <stdlib.h>
#include <string.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <ifaddrs.h>

int main(int argc, char *argv[]) {
        struct ifaddrs *addrs, *iap;
        struct sockaddr_in *sa;
        char buf[32];

        getifaddrs(&addrs);
        for (iap = addrs; iap != NULL; iap = iap->ifa_next) {
                if (iap->ifa_addr && (iap->ifa_flags & IFF_UP) && iap->ifa_addr->sa_family == AF_INET) {
                        sa = (struct sockaddr_in *)(iap->ifa_addr);
                        inet_ntop(iap->ifa_addr->sa_family, (void *)&(sa->sin_addr), buf, sizeof(buf));
                        if (!strcmp(argv[1], buf)) {
                                printf("%s\n", iap->ifa_name);
                        }
                }
        }
        freeifaddrs(addrs);
        return 0;
}