Ip address regex validate cmd Code Example - Coding

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

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

Related
how to install apt on chromebook Code Example
install reachrouter Code Example
Cannot find cairo.h! Please install cairo Code Example
erlang clear shell Code Example
linux updates popos Code Example