Linux Basic Introduction To Users
Into this tutorial we will learn how to identify a
user account or who is logged into system with commands like who or who am i.
If multiple users use a single system, then everyone
may have their own user account. At this time, it will be helpful to know who
is logged in and the user account details.
- Whoami :
To know about the system's username use the above
command.
Syntax:
# whoami
|
[pooja@linuxelearn
/]$ whoami
pooja
[pooja@linuxelearn
/]$
|
Check into the above table , 'pooja' is our system
username.
- who:
To check the information about the users logged on
to the system use the following command.
Syntax:
#
who
|
[root@linuxelearn
~]# who
root tty1 2017-02-02 21:12 (:0)
root pts/0 2017-02-02 21:15 (:0.0)
root pts/1 2017-02-02 23:19 (192.168.43.250)
[root@linuxelearn
~]#
|
- who am I :
This command will show the information about the
current user only.
Syntax:
# who
am i
|
[root@linuxelearn
~]# who am i
root pts/1 2017-02-02 23:19 (192.168.43.250)
[root@linuxelearn
~]#
|
Check at the above table, it is displaying current
logged in user in our system is root.
- w
Using this command we can see about the users who
are logged in and what are they doing.
Syntax
is :
#
w
|
[pooja@linuxelearn
/]$ w
23:26:39 up
2:22, 3 users, load average: 0.00, 0.00, 0.00
USER TTY
FROM LOGIN@ IDLE
JCPU PCPU WHAT
root tty1
:0 21:12 2:22m
8.67s 8.67s /usr/bin/Xorg :
root pts/0
:0.0 21:15 2:10m
0.06s 0.06s /bin/bash -l
root pts/1
192.168.43.250 23:19 1.00s
0.91s 0.48s w
[pooja@linuxelearn
/]$
|
- id
This command used for to check your user id, primary
group id, and a list of groups that belongs to that user.
Syntax
is :
Id
|
[pooja@linuxelearn
/]$ id
uid=503(pooja)
gid=508(pooja) groups=508(pooja),504(ram),505(rpgroup)
context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
[pooja@linuxelearn
/]$
|
I hope you enjoyed reading this article….
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