rwho | Clients to query the rwho server | Mehr ...
The rwho command produces output similar to who, but for all machines on the local network. If no report has been received from a machine for 11 minutes then rwho assumes the machine is down, and does not report users last known to be logged into that machine. . The ruptime command gives a status line like uptime for each machine on the local network; these are formed from packets broadcast by each host on the network once a minute.
Rwhod is the server which maintains the database used by the rwho(1) and ruptime(1) programs. Its operation is predicated on the ability to broadcast messages on a network.
