list the users

masatheesh · 04-30-2009, 05:34 AM

Hi,

Can anybody please tell me the command to listout the user names?I am using Centos 5.0.

acid_kewpie · 04-30-2009, 05:45 AM

getent passwd

masatheesh · 04-30-2009, 06:02 AM

But I need to differentiate with the users which are created bydefault in linux.Please tell how to do it?The motivation is,if unauthorised user creates an user in different name like default user,I will need to identify this.

acid_kewpie · 04-30-2009, 06:58 AM

if you're not going to ask full and complete questions, don't expect us to be psychic and know what you really meant.

you can't define a "default" user outside of root and a few others, as most accounts that you didn't add are service accounts, and so created during the installation of a service like apache, squid, ldap etc... Only thing you probably want to look at is the uid of the user. on redhat systems, local human uesrs start from 500.

anomie · 04-30-2009, 11:34 AM

Quote:

Originally Posted by masatheesh

The motivation is,if unauthorised user creates an user in different name like default user,I will need to identify this.

Sounds like a good job for a HIDS.

Also check out rkhunter. IIRC, it will warn you about newly created users/groups.