Мониторинг папки

#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <pthread.h>
#include <string.h>
#include <unistd.h>
#include<sys/stat.h>
#define N 6
struct param 
{
    char path [100];
    char count [10];
};
void * potok1(void *arg)
{   
    int t = 0;
    char text[100] = "\0";
    strcpy(text, "ls -hl ");
    strcat(text, ((struct param*)arg)->path);
    strcat(text, " >> /tmp/lognew.txt");
    system("touch /tmp/log.txt");
    while (t++ != N) {
        system(text);
        system("diff /tmp/lognew.txt /tmp/log.txt >> /tmp/changed.log || echo \"changed\" >> /tmp/changed.log");
        system("cp /tmp/lognew.txt /tmp/log.txt");
        system("rm /tmp/lognew.txt");
        sleep(10); 
    }
    return (EXIT_SUCCESS);
}
void * potok2(void *arg){
    int t = 0;
    char text2[100] = "\0";
    strcpy(text2, "ls -hl ");
    strcat(text2, ((struct param*)arg)->path);
    strcat(text2, " >> /tmp/lognew2.txt");
    system("touch /tmp/log2.txt");
    while (t++ != N) {
        system(text2);
        system("diff /tmp/lognew2.txt /tmp/log2.txt >> /tmp/changed2.log || echo \"changed\" >> /tmp/changed2.log");
        system("cp /tmp/lognew2.txt /tmp/log2.txt");
        system("rm /tmp/lognew2.txt");
        sleep(10); 
 
}
    return (EXIT_SUCCESS);
}
int main(int argc, char * argv[])
{   
 
    if(argc < 3)    {
        printf("Please, specify folder path!\n");
        return (1);}
    pid_t pid, sid;
    pid = fork();
    int result;
    struct param id[2];
    
    pthread_t thread1, thread2;
    strcpy(id[0].path, argv[1]);
    strcpy(id[1].path, argv[2]);
    
    pthread_create(&thread1, NULL, potok1, (void*)&(id[0]) );
    pthread_create(&thread2, NULL, potok2, (void*)&(id[1]) );
    pthread_join (thread1, NULL); 
    pthread_join (thread2, NULL); 
    printf("Done\n"); 
    return (0); 
}