#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>


int main(int argc, char** argv)
{
    if(argc != 2)
    {
        fprintf(stderr, "Usage ./main file_path");
    }

    const int to_sort = open(argv[1], O_RDONLY);
    dup2(to_sort, 0);

    close(to_sort);

    FILE* out = popen("sort", "r");

    char buff[200];
    int readed = 0;
    while((readed = fread(buff, sizeof(char), 200, out)) > 0 )
    {
        write(STDOUT_FILENO, buff, readed);
    }
    pclose(out);

    close(to_sort);
    return 0;
}