How to know your public IP in Linux terminal

Public addresses are allocated by InterNIC and consist of class-based network IDs or CIDR-based address blocks (called CIDR blocks), and are guaranteed to be unique across the global Internet. When a public address is assigned, its route is recorded to a router in the Internet, so that traffic to the public address can be reached smoothly. Traffic to the target public address is reachable via the Internet. For example, when a CIDR block is assigned to an organization in the form of a network ID and a subnet mask, the corresponding [network ID, subnet mask] is also stored as a route in the router on the Internet. The destination is the IP packet of the address in the CIDR block that is directed to the corresponding location.

In this article I will cover several ways to view your public IP address in a Linux terminal. This does not make sense for ordinary users, but it can be useful if a Linux server (without a GUI or as a user who can only use basic tools) is logged in. In any case, getting a public IP from a Linux terminal is meaningful in every way, and might be useful someday.

Here are the two commands we use primarily, curl and wget. You can use it for a change.

Curl Plain Text Format output:

1. Curl icanhazip.com

2. Curl Ifconfig.me

3. Curl curlmyip.com

4. Curl ip.appspot.com

5. Curl IPINFO.IO/IP

6. Curl Ipecho.net/plain

7. Curl www.trackip.net/i

Curl JSON format output:

1. Curl Ipinfo.io/json

2. Curl Ifconfig.me/all.json

3. Curl Www.trackip.net/ip?json (a little ugly)

Curl XML Format output:

1. Curl Ifconfig.me/all.xml

Curl gets all IP details (excavator)

1. Curl Ifconfig.me/all

Use Dydns (useful when you use the Dydns service)

1. Curl-s ' http://checkip.dyndns.org ' | Sed ' s/.*current IP address: \ ([0-9\.] *\). */\1/g '

2. Curl-s http://checkip.dyndns.org/| Grep-o "[[:d Igit:].] \+"

Use Wget instead of Curl

1. wget Http://ipecho.net/plain-O-Q; Echo

2. wget Http://observebox.com/ip-O-Q; Echo

Using the host and Dig commands

If so, you can also use the host and dig commands directly.

1. Host-t a dartsclink.com | Sed ' S/.*has address//'

2. Dig +short myip.opendns.com @resolver1. opendns.com

Bash Script Example:

1. #!/bin/bash

3. Public_ip= ' wget Http://ipecho.net/plain-O-Q; Echo '

4. Echo $PUBLIC _ip

Easy to use.

I'm actually writing a script to record all the IP changes in my router every day and save it to a file. I found these very useful commands in the search process. Hopefully someday it will help others.

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How to know your public IP in Linux terminal