On Wed, Aug 26, 2015 at 07:16:57AM +0800, 積丹尼 Dan Jacobson wrote:
> Somehow the case where everybody is using X windows should be detected
> vs. really no users.
>
> $ w
> 07:15:44 up 21 min, 0 users, load average: 0.08, 0.12, 0.14
> USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
Generally users that don't have their login process is why w doesn't
show them.
If you run utmpdump /var/run/utmp this shows the current utmp database.
The second column is the process ID of the login process.
ps <PID> should then show this process.
$ utmpdump /var/run/utmp | grep '\[:0 \]'
Utmp dump of /var/run/utmp
[7] [05857] [:0 ] [csmall ] [:0 ] [:0 ] [0.0.0.0
] [Mon Aug 31 22:24:28 2015 ]
$ ps 5857
PID TTY STAT TIME COMMAND
5857 ? Sl 0:00 gdm-session-worker [pam/gdm-password]
$ w | grep gdm
csmall :0 :0 22:24 ?xdm? 2days 0.04s
gdm-session-worker [pam/gdm-password]
--
Craig Small (@smallsees) http://enc.com.au/ csmall at : enc.com.au
Debian GNU/Linux http://www.debian.org/ csmall at : debian.org
GPG fingerprint: 5D2F B320 B825 D939 04D2 0519 3938 F96B DF50 FEA5
