Many services and applications require you to know your external (WAN) IP address. There are plenty of web sites that allow you to do this, but here are a couple of simple ways to do this from the command line in Linux.
The first method uses the cURL utility, which is basically a command-line utility for retrieving data using URL syntax. In Ubuntu or Debian, you can install cURL from the repositories using the command:
sudo apt-get install curl
After installing cURL, just run this command to get your external IP address:
curl ifconfig.me/ip
You can replace ifconfig.me with other service hostnames/URLs, such as:
- whatismyip.org
- icanhazip.com
- tnx.nl/ip
- myip.dnsomatic.com
- ip.appspot.com
- checkip.dyndns.org:8245
- whatismyip.com
- jsonip.com
The second method is really a variation on the one above and uses the wget command. You can use the same hostnames/URLs as above with this command:
wget -qO- ifconfig.me/ip
Have fun! And let me know your tips for this in the comments.
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