WHO command with examples

[root@server~]# Who

root     tty1         2012-03-01 09:05 (:0)

root     pts/0        2012-03-01 09:47 (

[root@server~]# who –a

system boot  2012-03-01 09:03       run-level 5  2012-03-01 09:03

LOGIN      tty2         2012-03-01 09:03              2659 id=2

LOGIN      tty3         2012-03-01 09:03              2661 id=3

LOGIN      tty4         2012-03-01 09:03              2665 id=4

LOGIN      tty5         2012-03-01 09:03              2670 id=5

LOGIN      tty6         2012-03-01 09:03              2681 id=6

root     – tty1         2012-03-01 09:05  old           2845 (:0)

root     + pts/0        2012-03-01 09:47 00:08      5624 (

[root@server~]# who –b        (time of last system boot)

system boot  2012-03-01 09:03

[root@server~]# who –d        (print dead processes)

pts/0        2012-03-01 09:07                 0 id=/0    term=0 exit=0

[root@server~]# who –l        (print system login processes)

LOGIN    tty2         2012-03-01 09:03              2659 id=2

LOGIN    tty3         2012-03-01 09:03              2661 id=3

LOGIN    tty4         2012-03-01 09:03              2665 id=4

LOGIN    tty5         2012-03-01 09:03              2670 id=5

LOGIN    tty6         2012-03-01 09:03              2681 id=6

[root@server~]# who –q     (all login names and number of users logged on)

root root root

# users=3


About Manish Jha

Hi All I am Manish Kumar Jha aka Alex Hunt. I am currently working in Iono,Inc as Cloud Solutions Architect. I have around 8 Years of IT experience and have exposure on VMware vSphere, vCloud Director, RHEL and modern data center technologies like Cisco UCS and Cisco Nexus 1000v and NSX. If you find any post informational to you please press like and share it across social media and leave your comments if you want to discuss further on any post. Disclaimer: All the information on this website is published in good faith and for general information purpose only. I don’t make any warranties about the completeness, reliability and accuracy of this information. Any action you take upon the information you find on this blog is strictly at your own risk. The Views and opinions published on this blog are my own and not the opinions of my employer or any of the vendors of the product discussed.
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