How Display Logged in User Information and Terminal number on Linux Server

In this post i will show on how to display logged in user information and terminal number on Linux server. This post provides practical examples for future references. This steps has been tested on Redhat Linux Enterprise server 6 and may working CentOS server as well.

1. “who am i” command is use to display the username of currently logged.

[root@rhel6 ~]# who am i
root     pts/1        2012-04-17 06:14 (192.168.1.52)

2. who command will display all the user currently logged in all terminals.

[root@rhel6 ~]# who
root     tty1         2012-04-17 04:29
root     pts/0        2012-04-17 04:29 (192.168.1.52)
root     pts/1        2012-04-17 06:14 (192.168.1.52)
root     pts/2        2012-04-17 06:01 (192.168.1.52)

3. tty command is used to display the terminal number of currently logged in terminals.

[root@rhel6 ~]# tty
/dev/pts/1

4. The w command shows who is logged in to the system and what they are doing.

[root@rhel6 ~]# w
 06:18:39 up  1:50,  4 users,  load average: 0.02, 0.02, 0.00
USER     TTY      FROM              LOGIN@   IDLE   JCPU   PCPU WHAT
root     tty1     -                04:29    1:48m  4.80s  4.78s ping www.google.com
root     pts/0    192.168.1.52     04:29    1:49m  0.02s  0.02s -bash
root     pts/1    192.168.1.52     06:14    0.00s  0.05s  0.01s w
root     pts/2    192.168.1.52     06:01   26.00s  0.11s  0.03s -bash
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