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[Bug 1408605] Re: last -t does not work as what man page said

To: touch-packages@xxxxxxxxxxxxxxxxxxx
From: elgs <elgs1980@xxxxxxxxxxx>
Date: Thu, 08 Jan 2015 15:40:13 -0000
Reply-to: Bug 1408605 <1408605@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Thanks Brian. This bug is very critical to my application. I believe it
is not correctly implemented. I wish this can be fixed soon. Thanks.

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https://bugs.launchpad.net/bugs/1408605

Title:
  last -t does not work as what man page said

Status in sysvinit package in Ubuntu:
  New

Bug description:
  The man page of the last command says as follows:

  -t YYYYMMDDHHMMSS
                Display  the  state of logins as of the specified time.  This is useful, e.g., to determine easily who was logged
                in at a particular time -- specify that time with -t and look for "still logged in”.

  However, Wen I ran the command with -t, I got the following output:
  # last -F -t 20150107000000 | grep pts
  root     pts/2        jp001.solidtunne Tue Jan  6 18:39:05 2015 - Tue Jan  6 18:40:34 2015  (00:01)    
  root     pts/2        jp001.solidtunne Tue Jan  6 18:37:24 2015 - Tue Jan  6 18:37:41 2015  (00:00)    
  root     pts/2        jp001.solidtunne Tue Jan  6 16:42:33 2015 - Tue Jan  6 16:43:49 2015  (00:01)    
  root     pts/2        jp001.solidtunne Tue Jan  6 13:03:26 2015 - Tue Jan  6 13:07:02 2015  (00:03)    
  root     pts/2        jp001.solidtunne Tue Jan  6 09:03:24 2015 - Tue Jan  6 09:03:54 2015  (00:00)    
  root     pts/2        jp001.solidtunne Tue Jan  6 04:53:54 2015 - Tue Jan  6 04:54:07 2015  (00:00)    
  root     pts/0        42.243.9.2       Mon Jan  5 03:06:48 2015 - Mon Jan  5 03:07:10 2015  (00:00)    
  root     pts/2        42.243.9.2       Sun Jan  4 14:08:02 2015 - Sun Jan  4 14:09:02 2015  (00:01)    
  root     pts/1        42.243.9.2       Sun Jan  4 12:09:56 2015 - Sun Jan  4 12:10:05 2015  (00:00)    
  root     pts/0        42.243.9.2       Sun Jan  4 03:24:57 2015 - Sun Jan  4 03:25:10 2015  (00:00)    
  root     pts/2        42.243.96.183    Sat Jan  3 14:47:38 2015 - Sat Jan  3 14:47:54 2015  (00:00)    
  root     pts/4        sf003.solidtunne Fri Jan  2 15:23:12 2015 - Fri Jan  2 15:23:51 2015  (00:00)    
  root     pts/0        hk000.solidtunne Thu Jan  1 16:40:55 2015 - Thu Jan  1 16:41:21 2015  (00:00)    
  root     pts/2        hk000.solidtunne Thu Jan  1 15:41:52 2015 - Thu Jan  1 15:42:02 2015  (00:00)    
  root     pts/4        hk000.solidtunne Thu Jan  1 11:24:56 2015 - Thu Jan  1 13:40:40 2015  (02:15)    
  root     pts/4        hk000.solidtunne Thu Jan  1 11:24:34 2015 - Thu Jan  1 11:24:48 2015  (00:00)    
  root     pts/0        hk000.solidtunne Thu Jan  1 08:31:13 2015 - Thu Jan  1 08:31:25 2015  (00:00)    

  The current date is as follows:
  # date
  Thu Jan  8 08:12:32 UTC 2015

  And Ubuntu version:
  # lsb_release -a
  No LSB modules are available.
  Distributor ID:	Ubuntu
  Description:	Ubuntu 14.04.1 LTS
  Release:	14.04
  Codename:	trusty

  Kernel:
  # uname -a
  Linux install 3.13.0-40-generic #69-Ubuntu SMP Thu Nov 13 17:53:56 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

  So, it seems the -t actually returns the state of logins "up till" the
  specified time, as opposed to "as of" the specified time as written in
  the man page, or am I missing something?

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