Check currently login user on your Linux system
Check currently login user on your Linux system.
How to check who is currently login on your Linux system now? To show who is login or if you want to check currently login user... or if you want to check who using your Linux system, just execute who command as show on the example below.
Linux who check currently login user:
Open shell terminal and type in who command and then hit Enter key…

[root@fedora12 ~]# who
fedora12 tty1 2010-05-26 09:08 (:0)
fedora12 pts/0 2010-05-26 09:08 (:0.0)
root pts/1 2010-05-27 10:53 (192.168.1.3)
fedora12 pts/2 2010-05-27 11:03 (192.168.1.3)
[root@fedora12 ~]#
To show more details about who is currently login on your Linux system just execute who command with –aH option as show on example below.

[root@fedora12 ~]# who -aH
NAME LINE TIME IDLE PID COMMENT EXIT
system boot 2010-05-19 08:14
run-level 5 2010-05-19 08:14
LOGIN tty4 2010-05-19 08:15 1400 id=4
LOGIN tty2 2010-05-19 08:15 1402 id=2
LOGIN tty5 2010-05-19 08:15 1401 id=5
LOGIN tty3 2010-05-19 08:15 1403 id=3
LOGIN tty6 2010-05-19 08:15 1404 id=6
fedora12 + tty1 2010-05-26 09:08 old 1568 (:0)
fedora12 + pts/0 2010-05-26 09:08 01:04 30296 (:0.0)
root + pts/1 2010-05-27 10:53 . 12686 (192.168.1.3)
fedora12 + pts/2 2010-05-27 11:03 00:34 13034 (192.168.1.3)
[root@fedora12 ~]#
The who command with –aH option show the time of last system boot, show dead process, show system login process, show active process spawn by init, show current runlevel, show last system clock change, show list users logged in on the system and the –H to print line of column heading.
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