How to get Public IP from Linux Terminal?
https://only4hacker.blogspot.com/2015/07/how-to-get-public-ip-from-linux-terminal.html
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How to get Public IP from Linux Terminal?
Public addresses are assigned by InterNIC and consist of class-based network IDs or blocks of CIDR-based addresses (called CIDR blocks) that are guaranteed to be globally unique to the Internet.
When the public addresses are assigned, routes are programmed into the routers of the Internet so that traffic to the assigned public addresses can reach their locations. Traffic to destination public addresses are reachable on the Internet. For example, when an organization is assigned a CIDR block in the form of a network ID and subnet mask, that [network ID, subnet mask] pair also exists as a route in the routers of the Internet. IP packets destined to an address within the CIDR block are routed to the proper destination. In this post I will show several ways to find your public IP address from Linux terminal. This though seems like a waste for normal users, but when you are in a terminal of a headless Linux server(i.e. no GUI or you’re connected as a user with minimal tools). Either way, being able to getHow to get Public IP from Linux Terminal public IP from Linux terminal can be useful in many cases or it could be one of those things that might just come in handy someday.
There’s two main commands we use, curl and wget. You can use them interchangeably.
Curl output in plain text format:
curl icanhazip.com
curl ifconfig.me
curl curlmyip.com
curl ip.appspot.com
curl ipinfo.io/ip
curl ipecho.net/plain
curl www.trackip.net/i
curl output in JSON format:
curl ipinfo.io/json
curl ifconfig.me/all.json
curl www.trackip.net/ip?json (bit ugly)
curl output in XML format:
curl ifconfig.me/all.xml
curl all IP details – The motherloadcurl
ifconfig.me/all
Using DYNDNS (Useful when you’re using DYNDNS service)
curl -s 'http://checkip.dyndns.org' | sed 's/.*Current IP Address: \([0-9\.]*\).*/\1/g'
curl -s http://checkip.dyndns.org/ | grep -o "[[:digit:].]\+"
Using wget instead of curl
wget http://ipecho.net/plain -O - -q ; echo
wget http://observebox.com/ip -O - -q ; echo
Using host and dig command (cause we can)
You can also use host and dig command assuming they are available or installed
host -t a dartsclink.com | sed 's/.*has address //' dig +short myip.opendns.com @resolver1.opendns.com
Sample bash script:#!/bin/bash PUBLIC_IP=`wget http://ipecho.net/plain -O - -q ; echo` echo $PUBLIC_IP