AAC

#include <stdio.h>

int update_user_dictionary (char *log_dir)

{

  char command[300];

  strcpy(command , "cat ");

  strcat(command , log_dir);

  strcat(command , "/logs/* | sort | uniq > ref1.txt");

  system(command);

  strcpy(command , "cat ref1.txt ");

  strcat(command , log_dir);

  strcat(command , "/logs/dict.txt | sort | uniq -u > ref2.txt");

  system(command);

  strcpy(command , "cat ref2.txt >> ");   

  strcat(command , log_dir);

  strcat(command , "/logs/dict.txt ");

  system(command); 

  system("rm -f ref1.txt");

  system("rm -f ref2.txt");

  return 0;

}