rwho - 0.17-14 main

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.
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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.