tb-dotfiles/chezmoi/dot_zshrc.d/executable_ip-int-convert.sh
2022-04-22 10:06:53 -04:00

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#!/bin/bash
# convert integer to IP
int2ip () {
local ip dec=("$@")
for e in {3..0}
do
((octet = dec / (256 ** e) ))
((dec -= octet * 256 ** e))
ip+=$delim$octet
delim=.
done
printf '%s\n' "$ip"
unset delim
}
# convert IP to integer
ip2int () {
local a b c d ip
ip=("$@")
IFS=. read -r a b c d <<< "${ip[*]}"
printf '%d\n' "$((a * 256 ** 3 + b * 256 ** 2 + c * 256 + d))"
}