On Thu, Jul 12, 2007 at 06:28:04PM -0700, Carlos Daniel Ruvalcaba Valenzuela wrote:
Please don't top-post. That's not standard for this list. I've fixed
your message...
> On 7/12/07, Rogelio Bastardo <scubacuda@xxxxxxxxx> wrote:
> >Where/how in CentOS can I get a nice list of all the usernames on the
> >system?
This isn't really a CentOS specific question; this is generic Unix.
> The file /etc/passwd should show all the system users (if you are
> using local loging and not NIS or other remote authentication
> systems), you will also see many systems users (like a user for
> apache, mysql, etc).
That will only work for local users. The answer you really want is
"getent passwd".
This handles everything nsswitch.conf does (NIS, LDAP, xyzzy, whatever).
To get just a list of usernames:
getent passwd | cut -d: -f1 | sort -u
What it _doesn't_ do is handle specialised authentication; just because
a person may have an account on a box doesn't mean a person can login or
otherwise access the box. Naming services do _not_ match authentication
and authorisation services.
However, if your environment is that complicated then you shouldn't be
asking such simple questions on this list :-) For a simple environment,
or even a moderately complicated one (NIS, NIS+, LDAP with no specialised
PAM rules) then "getent passwd" will do the job.
--
rgds
Stephen
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