Displaying private IP addresses
ip addr | grep 'state UP' -A2 | tail -n1 | awk '{print $2}' | cut -f1 -d'/'
address=$(ip addr show wlp3s0 | grep 'state UP' -A2 | tail -n1 | awk '{print $2}' | cut -f1 -d'/')
Displaying the public IP address
If you want to know the public IP address of a Linux server, you can send an HTTP request to one of the following web servers.
- http://ifconfig.me
- http://www.icanhazip.com
- http://ipecho.net/plain
- http://indent.me
- http://bot.whatismyipaddress.com
- https://diagnostic.opendns.com/myip
- http://checkip.amazonaws.com
curl http://checkip.amazonaws.com
wget -qO- http://checkip.amazonaws.com
References
https://unix.stackexchange.com/questions/119269/how-to-get-ip-address-using-shell-script
https://www.linuxtrainingacademy.com/determine-public-ip-address-command-line-curl/