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Old 10-23-2005, 09:30 PM   #1
amitsharma_26
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Post DISCUSSION: How to list all your USERs..


This thread is to discuss the article titled: How to list all your USERs..
 
Old 03-28-2006, 06:58 PM   #2
linuxlinux
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Well when I tried to execute this command this is the answer any idea why has this turned up

[root@unisa ~]# cat /etc/passwd |grep /bin/bash |grep [5-9][0-9][0-9] |cut -d: -f1
Harry
harry
steve
master
help
[root@unisa ~]# alias listuser=cat /etc/passwd |grep /bin/bash |grep [5-9][0-9][0-9] |cut -d: -f1
-bash: alias: /etc/passwd: not found
[root@unisa ~]#
 
Old 03-28-2006, 07:43 PM   #3
gilead
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You need to wrap it in quotes the way they do in the article:
Code:
alias userlist='cat /etc/passwd |grep "/bin/bash" |grep "[5-9][0-9][0-9]" |cut -d: -f1'
 
Old 11-06-2006, 01:09 AM   #4
sysconfig
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awk -F":" '{ print "username: " $1 "\t\tuid:" $3 }' /etc/passwd
 
Old 01-11-2008, 12:38 PM   #5
hardened
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Thumbs up great alternate method

Quote:
Originally Posted by sysconfig View Post
awk -F":" '{ print "username: " $1 "\t\tuid:" $3 }' /etc/passwd
Wow! Awesome alternate method. Thx Sysconfig!
awk and gawk are really powerful, I need to spend some time studying them.
 
Old 06-30-2008, 09:16 AM   #6
eponcedeleonc
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how do you list users and passwords? I need to do that.
Thank you
 
Old 06-30-2008, 03:30 PM   #7
salasi
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Quote:
Originally Posted by eponcedeleonc View Post
how do you list users and passwords?
Hmm, so you want a potential security hole that allows any hacker who can get the root password (or even get briefly to a terminal in use by a root user) to get every login password on the system? Are you really sure that's a good idea?

PS: I wouldn't tell you even if I knew. Which I don't.
 
Old 07-01-2008, 02:06 AM   #8
win32sux
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Quote:
Originally Posted by eponcedeleonc View Post
how do you list users and passwords? I need to do that.
Being able to list users' passwords would imply that the passwords are stored somewhere on the system, which is not the case. What is stored are salted hashes of the passwords. So unless you've changed something to the standard way GNU/Linux handles user passwords, you won't be able to get any password list.

Last edited by win32sux; 07-01-2008 at 02:07 AM.
 
Old 07-01-2008, 12:07 PM   #9
eponcedeleonc
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well I have a user from another company that has access to the server and DB as root and due to company problems with their company we are going manage the server and DB and i need to know how to block him from having any access to the server and DB.. its just a precaution that needs to be considered, and i dunno if changing the root password would be enough!
 
Old 07-01-2008, 06:25 PM   #10
win32sux
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Quote:
Originally Posted by eponcedeleonc View Post
well I have a user from another company that has access to the server and DB as root and due to company problems with their company we are going manage the server and DB and i need to know how to block him from having any access to the server and DB.. its just a precaution that needs to be considered, and i dunno if changing the root password would be enough!
Changing the root password might be enough if you had a way to be sure that he didn't install any sort of backdoor. And you don't have any way to be sure of that unless you did something like take a HIDS snapshot or something before you gave him root access. That said, I'm still not sure how this relates to getting a listing of users' passwords. I mean, you don't need to know that passwords in order to change them. And the guy with root could have easily installed a password sniffer to get everyone's passwords if he wanted them (since cracking the salted hashes would probably be infeasible for him).
 
Old 11-30-2009, 04:54 PM   #11
fatima74
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Quote:
Originally Posted by sysconfig View Post
awk -F":" '{ print "username: " $1 "\t\tuid:" $3 }' /etc/passwd
Oh so KEWL, first time I am using awk THANK YOU =)

Did my own variation:
awk -F":" '{ print "Linux_name: " $1 "\t\tFull_Name: " $5 }' /etc/passwd
 
Old 08-02-2012, 11:00 AM   #12
crtlbreak
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Wink

Quote:
Originally Posted by eponcedeleonc View Post
well I have a user from another company that has access to the server and DB as root and due to company problems with their company we are going manage the server and DB and i need to know how to block him from having any access to the server and DB.. its just a precaution that needs to be considered, and i dunno if changing the root password would be enough!
It was not designed to allow other people to be given root access.
The security permissions are exactly designed around limiting access to only that which is required to perform the task at hand.
If the other company requires unlimited database access that is alowable through your specific DB admin tool or command?
Regards
 
Old 10-16-2012, 12:48 AM   #13
ylsantosh
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How to list all your user

cat /etc/passwd (to display all user )
cat /etc/passwd | wc -l (to count how many user is there ur system )
 
  


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