Difference between system uptime and last boot time. Post: 302521391

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Top Forums UNIX for Dummies Questions & Answers Difference between system uptime and last boot time. Post 302521391 by pinga123 on Wednesday 11th of May 2011 06:19:14 AM

05-11-2011

Registered User

Quote:

Originally Posted by sagoiz

Hi, it is also strange that the time shown by the uptime is actually in the past as per the date command.
Below an output from one of our Linux testing machines:

Code:

[jira@frodo ~]$ date; last reboot; uptime
Wed May 11 12:11:57 EEST 2011
reboot   system boot  2.6.18-194.3.1.e Mon May  9 00:00         (2+12:11)   

wtmp begins Sun May  8 03:05:01 2011
 12:11:57 up 2 days, 12:12,  6 users,  load average: 13.40, 13.99, 13.48

As seen also, the output from your "system reboot" says that it was done 19:46 hours ago.
Could you please post the result of the commands as per my example?

Thank you.

Please find the output as requested.

Code:

# date; last reboot; uptime
Wed May 11 15:47:52 IST 2011
reboot   system boot  2.6.18-194.el5   Tue May 10 17:35          (22:12)
reboot   system boot  2.6.18-194.el5   Wed May  4 17:21         (6+22:26)
reboot   system boot  2.6.18-194.el5   Tue May  3 07:42         (2+04:20)
reboot   system boot  2.6.18-194.el5   Wed Apr 27 22:12         (5+09:18)
reboot   system boot  2.6.18-194.el5   Wed Apr 27 13:57         (5+17:34)
reboot   system boot  2.6.18-194.el5   Tue Apr 26 12:06          (20:17)
reboot   system boot  2.6.18-194.el5   Wed Apr 20 18:48         (6+12:07)
reboot   system boot  2.6.18-194.el5   Wed Apr 20 18:09          (00:38)
reboot   system boot  2.6.18-194.el5   Thu Apr  7 10:45         (13+07:17)
reboot   system boot  2.6.18-194.el5   Tue Apr  5 23:55         (1+10:47)
reboot   system boot  2.6.18-194.el5   Wed Apr  6 04:50          (-5:-1)
reboot   system boot  2.6.18-194.el5   Tue Apr  5 04:01          (19:12)
reboot   system boot  2.6.18-194.el5   Mon Mar 28 18:58         (8+02:37)
reboot   system boot  2.6.18-194.el5   Sun Mar 27 18:15          (19:09)
reboot   system boot  2.6.18-194.el5   Sat Mar 12 18:19         (15+18:02)
reboot   system boot  2.6.18-194.el5   Mon Feb 28 15:54         (27+20:27)
reboot   system boot  2.6.18-194.el5   Sat Feb 26 12:43         (2+03:00)
reboot   system boot  2.6.18-194.el5   Sat Feb 26 11:56          (00:38)
reboot   system boot  2.6.18-194.el5   Thu Feb 24 14:43         (1+21:09)
reboot   system boot  2.6.18-194.el5   Thu Feb 24 14:07          (00:30)
reboot   system boot  2.6.18-194.el5   Mon Feb 21 17:08         (2+20:55)
reboot   system boot  2.6.18-194.el5   Sun Feb 13 18:57         (7+21:58)
reboot   system boot  2.6.18-194.el5   Thu Feb 10 19:42         (2+17:41)
reboot   system boot  2.6.18-194.el5   Wed Feb  2 09:41         (9+03:32)
reboot   system boot  2.6.18-194.el5   Mon Jan 31 20:41         (1+17:21)
reboot   system boot  2.6.18-194.el5   Mon Jan 31 14:05          (23:32)
reboot   system boot  2.6.18-194.el5   Mon Jan 31 06:01          (02:32)
reboot   system boot  2.6.18-194.el5   Tue Jan 25 03:46         (6+04:47)
reboot   system boot  2.6.18-194.el5   Mon Jan 24 21:36          (00:37)
reboot   system boot  2.6.18-194.el5   Thu Jan 20 03:23          (01:43)
reboot   system boot  2.6.18-194.el5   Thu Jan 20 03:10          (00:11)
reboot   system boot  2.6.18-194.el5   Sat Nov 13 08:58          (00:02)
reboot   system boot  2.6.18-194.el5   Sat Nov 13 08:48          (00:07)
reboot   system boot  2.6.18-194.el5   Sat Nov 13 07:24          (01:12)
reboot   system boot  2.6.18-194.el5   Fri Nov 12 22:35          (00:06)
reboot   system boot  2.6.18-194.el5   Sat Nov 13 03:59          (-5:-24)
reboot   system boot  2.6.18-194.el5   Sat Nov 13 03:49          (00:09)
reboot   system boot  2.6.18-194.el5   Sat Nov 13 03:43          (00:04)
reboot   system boot  2.6.18-194.el5   Fri Nov 12 16:43          (05:28)

wtmp begins Fri Nov 12 16:43:22 2010
 15:47:52 up  3:12,  3 users,  load average: 2.08, 2.10, 2.18

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