Unix Grep command

I have to search fro开发者_如何学Cm codebase of lines having following pattern:

"get_token , get_token" 

For example the below line 'type' should be listed:

fn1(string.get_token(), string1.get_token());

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grep -R ".*get_token(),.*get_token()" *

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egrep '(get_token).*\1'

Modify as needed.

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grep "get_token.*,.*get_token" *

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grep -E -n 'get_token.*?get_token' *

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| grep "get_token.*,.*get_token"