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I dont have curl or links installed, so I use wget with write file as standard out.
There are 4 alternatives - vote for the best!
Short command, easy to remember
Curl is not installed by default on many common distros anymore. wget always is :)
wget -qO- ifconfig.me/ip
Very effective, use only DNS protocol. The @ part is optional if you already set opendns servers as default ns servers.
If you can do better, submit your command here.
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