LFPREFIX
if (strncmp(names[cnt], LFPREFIX, sizeof(LFPREFIX) - 1) != 0)
clv = atoi(names[cnt] + (sizeof(LFPREFIX) - 1));
char old[sizeof(LFPREFIX) + 5 + 20], new[sizeof(LFPREFIX) + 10 + 20];