Main use command_exec() to run a commande

src/shell.c

@@ -12,14 +12,13 @@ int main(int argc, char *argv[])
 {
   char * user_input;
   cmd_t command;
-  int command_parse_result = 0;
   
   user_input = calloc(LIMIT_USER_INPUT_MAX_LENGTH, sizeof(char));
   
   while(1){
     interface_ask_user_input(user_input);
-    command_parse_result = command_from_str(user_input, &command);
-    interface_print_command(command);
+    command_from_str(user_input, &command);
+    command_exec(&command);
   }
   return 0;
 }