Pubnix as a “IP Who Am I” Service

Sometime you want to know your PC’s external IP address. There’re a lot of websites for this purpose. When connecting to pubnix via ssh, you can have it report your ssh client’s IP address

$ ssh -t sdf 'who -m'

example_user      pts/3    Jan 26 00:02     (222.222.22.22)

• who -m reports the user on the current TTY.
• ssh -t forces the allocation of a TTY.