Working Ninja
2016-05-01T11:09:13
Get WAN IP for Machine
Bash Command Line DNS Networking WAN 
$ dig +short myip.opendns.com @resolver1.opendns.com

Source: http://unix.stackexchange.com/questions/22615/how-can-i-get-my-external-ip-address-in-bash/81699#81699

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