program that checks whether it can setgid to the group specified. This ... superuser) is in that group, or can setgid to it, it will return 0. AUTHORcurrent process are taken). setuid= value and setgid= value Set the owner and groupuser may attempt to create a setgid binary with a restricted group ownership. Later, whentypically installed setuid root or setgid shadow. The interface of the helper - command line options