Get lines/s from file v0.1

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

int main( int argc, char *argv[] ) {
// char buf[32768];
 char buf[1024];
 int fd, buflen,lineas=0,i=0;


 fd = open("/var/log/snort/alert.fast",O_RDONLY);

// lseek( fd, 0 - sizeof(buf), SEEK_END);
 lseek( fd, 0, SEEK_END);


for ( ;; ) {

  buflen = read(fd, buf, sizeof(buf));

  for ( i=0; i<sizeof(buf);i++){
    if ( buf[i] == '\n' ) {
        lineas++;
    }
  }


 if ( buflen > 0 ){
//    printf("%s",buf);
        printf("Lineas/s: %d\n", lineas);
        lineas = 0;
 }

 lseek(fd, sizeof(buf), SEEK_CUR);

 sleep ( 1 );

}

close(fd);

}