Package: rwho

"rwho" package binaries on CentOS:

/usr/bin/ruptime /usr/bin/rwho /usr/sbin/rwhod

You may install this package on CentOS with yum install rwho

"rwho" package binaries on Debian:

/usr/bin/ruptime /usr/bin/rwho

You may install this package on Debian with apt-get install rwho