rpc.rusersd(8) - OpenBSD manual pages

rpc.rusersd is a server which returns information about users currently logged in to the system. At startup, rpc.rusersd opens /var/run/utmp and subsequently performs a chroot(2) to /var/empty and switches to user nobody.

The currently logged in users are queried using the rusers(1) command. The rpc.rusersd daemon is normally invoked by inetd(8).

rpc.rusersd uses an RPC protocol defined in /usr/include/rpcsvc/rnusers.x.