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ruptime(1c)							   ruptime(1c)

Name
       ruptime - show host status of local machines

Syntax
       ruptime [ options ] [ machinename ]

Description
       The command gives a status line like for each machine on the local net‐
       work.  If a machinename is given, the status of only the named  machine
       is given.  These status lines are formed from packets broadcast by each
       host on the network once a minute.

       Machines for which no status report has been received for 5 minutes are
       shown as being down.

Options
       -a   Users  idle	 an hour or more are not counted unless this option is
	    specified.

       -d   Display only those hosts that are considered down.

       -l   Sort the status list by load  average.   If	 more  than  one  sort
	    option is given, uses the last one.

       -r   Show only hosts that are up and running.

       -t   Sort  the  status list by uptime.  If more than one sort option is
	    given, uses the last one.

       -u   Sort the status list by number of users.  If more  than  one  sort
	    option is given, uses the last one.

       -nn  Show only those hosts with nn or more users.

Restrictions
       Because the daemon sends its information in broadcast packets it gener‐
       ates a large amount of network traffic.	On large  networks  the	 extra
       traffic	may  be	 objectionable.	  Therefore, the daemon is disabled by
       default.	 To make use of the daemon  for	 both  the  local  and	remote
       hosts, remove the comment symbols (#) from in front of the lines speci‐
       fying in the file.

       If the daemon is not running on	a  remote  machine,  the  machine  may
       incorrectly appear to be down when you use the command to determine its
       status.	See the reference page for more information.

       If a system has more than 40 users logged in at	once,  the  number  of
       users  displayed	 by  the  command  is incorrect.  Users who login to a
       machine after that point fail to increment the user count that  appears
       in the output of the command.  This is due to the maximum size limit of
       an Ethernet packet, which is 1500 bytes, and the fact that  the	daemon
       must broadcast its information in a single packet.

Files
       /usr/spool/rwho/whod.*	Information about other machines

See Also
       rwho(1c), rwhod(8c)

								   ruptime(1c)

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