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Operating Systems Linux Red Hat Difference between uptime and who -b Post 302950344 by seenuvasan1985 on Thursday 23rd of July 2015 02:56:06 PM
Old 07-23-2015
RedHat Difference between uptime and who -b

Hi Folks,

I have been checking on a redhat server for patching, when I tried the output for uptime and who -b both are not matching. I do not know the reason what happened and why it seems like this.

Please assist someone and explain in detail.
I would appreciate if I get the right answer.Smilie

Code:
[svcsuprt@miaapp003 ~]$ uptime
18:54:03 up 187 days, 23:07, 1 user, load average: 0.12, 0.04, 0.02

[svcsuprt@miaapp003 ~]$ who -b
system boot 2014-08-10 18:24

[svcsuprt@miaapp003 ~]$ last reboot
reboot system boot 2.6.32-504.el6.x Sun Aug 10 18:24 - 18:54 (347+00:29)
wtmp begins Sun Aug 10 18:24:50 2014

Moderator's Comments:
Mod Comment Please use CODE tags when displaying sample input, output, and code segments.

Last edited by Don Cragun; 07-23-2015 at 04:36 PM.. Reason: Add CODE tags
 

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RUPTIME(1)						    BSD General Commands Manual 						RUPTIME(1)

NAME
ruptime -- show host status of local machines SYNOPSIS
ruptime [-alrtu] [host ...] DESCRIPTION
The ruptime utility gives a status line like uptime(1) for each machine on the local network; these are formed from packets broadcast by each host on the network once every three minutes. If no operands are given, ruptime displays uptime status for all machines; otherwise only those hosts specified on the command line are dis- played. If hosts are specified on the command line, the sort order is equivalent to the order hosts were specified on the command line. Machines for which no status report has been received for 11 minutes are shown as being down, and machines for which no status report has been received for 4 days are not shown in the list at all. The options are as follows: -a Include all users. By default, if a user has not typed to the system for an hour or more, then the user will be omitted from the output. -l Sort by load average. -r Reverse the sort order. -t Sort by uptime. -u Sort by number of users. The default listing is sorted by host name. FILES
/var/rwho/whod.* data files SEE ALSO
rwho(1), uptime(1), rwhod(8) HISTORY
A ruptime utility appeared in 4.2BSD. BSD
March 1, 2003 BSD
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