wget -qO- http://ipecho.net/plain ; echo
or
wget -qO- icanhazip.com
or
curl ipv4.icanhazip.com
blog.rudel.nl
it's a blog. Also I like snowflakes.
wget -qO- http://ipecho.net/plain ; echo
or
wget -qO- icanhazip.com
or
curl ipv4.icanhazip.com