Noob minix problem

ETC Homework & Coursework Questions
1

please help!!
The question that has been asked is to use /tmp directory in minix to get to know the root password or get the root privilege .
onr thing that I have done is
:
% cp /bin/sh /tmp
% chmod 4777 /tmp/sh
now what next must i do to get the root privelege?
or maybe some other method

IIITH,hyderabad,india,shatrunjay rawat,IT coursw

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