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I can do an su with su <username> and it asks for my password. Is there a password parameter for su such that i wont be prompted for a password?

e.g. su <username> -p <password>

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It seems the question fits perferctly to superuser: superuser.com :-) –  Hongbo Zhu Oct 7 '13 at 12:59
i got it from superuser here, superuser.com/questions/67765/… –  alvas Oct 7 '13 at 13:08

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