Install rusers if you need to keep track of who is logged into your
local network.
-rwxr-xr-x 1 root root 137150 Sep 28 2001 /usr/bin/rup -rwxr-xr-x 1 root root 133706 Sep 28 2001 /usr/bin/rusers -rw-r--r-- 1 root root 1878 Sep 28 2001 /usr/share/man/man1/rup.1.gz -rw-r--r-- 1 root root 1759 Sep 28 2001 /usr/share/man/man1/rusers.1.gz