switch(fork()) {
case 0:
#ifndef DEBUG
/* don't print on console if the ethtool cannot disable some offloads unless you are in debug mode */
close(2);
#endif
execvp(param[0], param);
         safe_free_mem(param, &param_length, command);
_exit(EINVALID);
case -1:
safe_free_mem(param, &param_length, command);
default:
safe_free_mem(param, &param_length, command);
wait(&ret_val);
}