wheel group

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/usr/sbin/groupadd -g 13 wheel
/usr/bin/chgrp wheel /usr/bin/su /sbin/su.static
/usr/bin/chmod 4550 /usr/bin/su /sbin/su.static

The GID for the wheel group does not need to be 13, any valid GID can be used. You will need to edit /etc/group to add users to the wheel group.

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