1 /* Public domain. */ 2 3 #include <unistd.h> 4 main()5 int main() 6 { 7 gid_t x[4]; 8 9 x[0] = x[1] = 0; 10 if (getgroups(1,x) == 0) if (setgroups(1,x) == -1) _exit(1); 11 _exit(0); 12 } 13