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#!/bin/bash
ip='172.0.0.1'
echo $ip | sed -E 's/\b([0-9]{1,3}\.){2}([0-9]{1,3}\.[0-9]{1,3})\b/XXX.ZZZ.\2/g'

Success #stdin #stdout 0s 19632KB

stdin

Standard input is empty

stdout

XXX.ZZZ.0.1

https://ideone.com/OAcWL0

language:

Bash (bash 5.0.3)

created:

visibility:

public

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