ruby on rails - Setting up fake URLs locally that support subdomains -

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i'm developing rails 3 app locally on mac. want test locally fake urls support subdomains, e.g. http://blah.example.com , http://blah2.example.com. how can set up?

run favorite shell , terminal:

sudo nano /etc/hosts

add in new line:

127.0.0.1    *.example.com

press ctrl+x save.

make sure not delete lines there!


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