#include <stdio.h>
#include <sys/types.h>
#include <libutil.h>

/* To use: cc logout.c -o logout -lutil */

int main(int argc, char *argv[])
{
	if (argc < 2) {
		fprintf(stderr, "usage: %s <tty>\n", argv[0]);
		exit(1);
	}
	if (getuid() != 0) {
		fprintf(stderr, "You need to be root to use this program\n");
		exit(1);
	}
	printf("Logging out user on %s: %s\n", argv[1],
		logout(argv[1]) ? "SUCCESS" : "FAILURE");
	exit(0);
}