Google Authenticator from Terminal

readme.txt

This instruction will allow you to get keys from Google Authenticator via terminal.

1) Download oathtool
brew install oathtool 
http://www.nongnu.org/oath-toolkit/oathtool.1.html

2) Get your 2-Factor authentication secret key.
For example, instead of capturing barcode, ask Google 2-factor auth to enter code manually.
And google 2-factor auth will provide you your secret key.

3) Open terminal and enter command
oathtool --totp -b "secretkey"

4) Enter received numbers from command into Google form.

5) Alias command it to something more handy.

Brew Changed to
brew install oath-toolkit