this is what I meant (make df work on raw disks, remove other compat stuff)

[unix-history] / usr / src / usr.bin / ruptime / ruptime.1

.\" Copyright (c) 1983 The Regents of the University of California.
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.\"	@(#)ruptime.1	6.3 (Berkeley) %G%
.\"
.TH RUPTIME 1 ""
.UC 5
.SH NAME
ruptime \- show host status of local machines
.SH SYNOPSIS
.B ruptime
[
.B -alrtu
]
.SH DESCRIPTION
.I Ruptime
gives a status line like
.I uptime
for each machine on the local network; these are formed from packets
broadcast by each host on the network once a minute.
.PP
Machines for which no status report has been received for 11
minutes are shown as being down.
.PP
Users idle an hour or more are not counted unless the
.B \-a
flag is given.
.PP
Normally, the listing is sorted by host name.
The
.BR \-l ,
.BR \-t ,
and
.BR \-u
flags specify sorting by load average, uptime, and number of users,
respectively.
The
.B \-r
flag reverses the sort order.
.SH FILES
.DT
/usr/spool/rwho/whod.*	data files
.SH SEE ALSO
rwho(1)