#include <unistd.h>
#include <grp.h>

int main(void) {
	uid_t newuid = 997;
	gid_t newgid = 997;

	setgid(newgid);
	setgroups(1, &newgid);
	setuid(newuid);
	execl("/usr/bin/id", "id", (char*) NULL);
	return 1;
}