sw00

from __future__ import print_function
import os
import sys
from itertools import chain
from collections import defaultdict
import argparse
from operator import attrgetter
import json
from importlib import import_module

sw00

#!/bin/bash
set -xe

calculate_subnet() {
    IP=$1
    PREFIX=$2

    { IFS=. read -r i1 i2 i3 i4; } <<< $IP
    { IFS=. read -r xx m1 m2 m3 m4; } <<< $(for a in $(seq 1 32); do if [ $(((a - 1) % 8)) -eq 0 ]; then echo -n .; fi; if [ $a -le $PREFIX ]; then echo -n 1; else echo -n 0; fi; done)
    printf "%d.%d.%d.%d\n" "$((i1 & (2#$m1)))" "$((i2 & (2#$m2)))" "$((i3 & (2#$m3)))" "$((i4 & (2#$m4)))"

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-----BEGIN PGP PUBLIC KEY BLOCK-----

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3FAcUXQmY86r+7r6lMqcwlM2UazQh9AtY/d27MEJP/zHj7znZVjgOUkDDqNxcnKp
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cJnaqjWADiFjWawVpLw491l+CmeuvbLACN59F0zpq/1n5KLRG/5N0sxVwblPxBif