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Ip address regex validate cmd

Ip address regex validate cmd

#!/bin/sh

ip=1.2.3.4

if expr "$ip" : '[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*$' >/dev/null; then
  echo "success"
else
  echo "fail"
fi

0

Source: stackoverflow.com

Ip address regex validate cmd

#!/usr/bin/env bash

ip=1.2.3.4

if [[ $ip =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
  echo "success"
else
  echo "fail"
fi

0

Source: stackoverflow.com

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