Redhat-install-list Digest, Vol 32, Issue 9

Wed Oct 18 18:16:04 UTC 2006

Nothing assigning a user ID wont do anything, the system will assign the
User ID with what ever is avaiable, -r isnt for assigning user id (-r This
flag is used to create a system account. That is, a user with a UID lower
than the value of UID_MIN defined in
              /etc/login.defs  and whose password does not expire. Note that
useradd will not create a home directory for such an
              user, regardless of the default setting in /etc/login.defs.
You have to specify -m  option  if  you  want  a  home
              directory for a system account to be created.  This is an
option added by Red Hat.)
you should use -u if your looking to assign DI.

On 10/18/06, redhat-install-list-request at redhat.com <
redhat-install-list-request at redhat.com> wrote:
>
> Send Redhat-install-list mailing list submissions to
>         redhat-install-list at redhat.com
>
> To subscribe or unsubscribe via the World Wide Web, visit
>         https://www.redhat.com/mailman/listinfo/redhat-install-list
> or, via email, send a message with subject or body 'help' to
>         redhat-install-list-request at redhat.com
>
> You can reach the person managing the list at
>         redhat-install-list-owner at redhat.com
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Redhat-install-list digest..."
>
>
> Today's Topics:
>
>    1. Adding Users Command line (Bret Stern)
>    2. Re: Adding Users Command line (Bob McClure Jr)
>    3. Re: Adding Users Command line (Rick Stevens)
>    4. RE: Adding Users Command line (Bret Stern)
>    5. Problem installing RHEL 4.0  Hitachi SATA 80GB desksta (Naveed)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 17 Oct 2006 13:16:14 -0700
> From: "Bret Stern" <bret_stern at machinemanagement.com>
> Subject: Adding Users Command line
> To: <redhat-install-list at redhat.com>
> Message-ID: <000001c6f229$18e01f40$6701a8c0 at mmbret>
> Content-Type: text/plain;       charset="us-ascii"
>
>
>
> When adding users from the (command line)
>
> useradd
>
> has an option -r which assigns a specific user id.
>
> Is it common to explicitly assign a user id?
>
> What happens if I don't specifically assign a user id?
>
> I'm assuming two users cannot have the same user id,
> so..how would you know the user id's of all your users?
>
> Thanks
>
>
>
>
>
>
> ------------------------------
>
> Message: 2
> Date: Tue, 17 Oct 2006 15:27:37 -0500
> From: Bob McClure Jr <bob at bobcatos.com>
> Subject: Re: Adding Users Command line
> To: redhat-install-list at redhat.com
> Message-ID: <20061017202737.GA12080 at bobcat.bobcatos.com>
> Content-Type: text/plain; charset=us-ascii
>
> On Tue, Oct 17, 2006 at 01:16:14PM -0700, Bret Stern wrote:
> >
> >
> > When adding users from the (command line)
> >
> > useradd
> >
> > has an option -r which assigns a specific user id.
>
> Nope, that tells it to assign a "system-level" user id number, usually
> less than 500 or 1000.  These are designed for pseudo users assigned
> to subsystems and processes like mysql, procmail, backup, bin, et al.
>
> > Is it common to explicitly assign a user id?
>
> Only if you want to make it the same as on another system or to force
> a duplicated UID.
>
> > What happens if I don't specifically assign a user id?
>
> It takes the next available UID in the desired range.  That's usually
> figured by taking the highest occupied UID in the range and adding
> one.
>
> > I'm assuming two users cannot have the same user id,
> > so..how would you know the user id's of all your users?
>
> You don't need to, but if you must, look at the third field (delimited
> by ':') in /etc/passwd.  Unless you have some good reason to specify a
> UID, just let the system assign one.
>
> > Thanks
>
> Cheers,
> --
> Bob McClure, Jr.             Bobcat Open Systems, Inc.
> bob at bobcatos.com             http://www.bobcatos.com
> "Where you go in the hereafter depends on what you were after here."
>   - Thanks to Graffiti, 2 March 2004
>
>
>
> ------------------------------
>
> Message: 3
> Date: Tue, 17 Oct 2006 15:52:47 -0700
> From: Rick Stevens <rstevens at vitalstream.com>
> Subject: Re: Adding Users Command line
> To: Getting started with Red Hat Linux
>         <redhat-install-list at redhat.com>
> Message-ID: <1161125567.22395.88.camel at prophead.corp.publichost.com>
> Content-Type: text/plain
>
> On Tue, 2006-10-17 at 15:27 -0500, Bob McClure Jr wrote:
> > On Tue, Oct 17, 2006 at 01:16:14PM -0700, Bret Stern wrote:
> > >
> > >
> > > When adding users from the (command line)
> > >
> > > useradd
> > >
> > > has an option -r which assigns a specific user id.
> >
> > Nope, that tells it to assign a "system-level" user id number, usually
> > less than 500 or 1000.  These are designed for pseudo users assigned
> > to subsystems and processes like mysql, procmail, backup, bin, et al.
> >
> > > Is it common to explicitly assign a user id?
> >
> > Only if you want to make it the same as on another system or to force
> > a duplicated UID.
>
> Or if you relegate ranges of UIDs to specific types of users.
>
>
> > > What happens if I don't specifically assign a user id?
> >
> > It takes the next available UID in the desired range.  That's usually
> > figured by taking the highest occupied UID in the range and adding
> > one.
>
> The values used are given in /etc/login.defs.  By default, RH/FC use
> user and group IDs beginning at 500 and ending at 60,000.
>
> > > I'm assuming two users cannot have the same user id,
> > > so..how would you know the user id's of all your users?
>
> Well, all files use the UID and GID _numbers_, not names.  You could
> have two users, "barney" and "fred" that both have UID 500.  They both
> own the file.  When you do an "ls -l", the FIRST name in the /etc/passwd
> file with that UID will be shown as the owner.
>
> Remember that the the usernames are only important for login.  File
> ownership, permissions, ACLs and the lot are determined by UID and GID
> numbers, not the names associated with them.
>
> > You don't need to, but if you must, look at the third field (delimited
> > by ':') in /etc/passwd.  Unless you have some good reason to specify a
> > UID, just let the system assign one.
>
> If you want to see the user names and their UIDs, as root:
>
>         # cut -d":" -f1,3 /etc/passwd
>
> But as Bobcat says, you really don't need to do this.  Let the system
> sort it out.  It's much less likely to make a boo-boo.
>
> ----------------------------------------------------------------------
> - Rick Stevens, Senior Systems Engineer     rstevens at vitalstream.com -
> - VitalStream, Inc.                       http://www.vitalstream.com -
> -                                                                    -
> -     Veni, Vidi, VISA:  I came, I saw, I did a little shopping.     -
> ----------------------------------------------------------------------
>
>
>
> ------------------------------
>
> Message: 4
> Date: Tue, 17 Oct 2006 17:59:27 -0700
> From: "Bret Stern" <bret_stern at machinemanagement.com>
> Subject: RE: Adding Users Command line
> To: "'Getting started with Red Hat Linux'"
>         <redhat-install-list at redhat.com>
> Message-ID: <001401c6f250$a92f6980$6701a8c0 at mmbret>
> Content-Type: text/plain;       charset="us-ascii"
>
>
>
> > -----Original Message-----
> > From: redhat-install-list-bounces at redhat.com
> > [mailto:redhat-install-list-bounces at redhat.com] On Behalf Of
> > Bob McClure Jr
> > Sent: Tuesday, October 17, 2006 1:28 PM
> > To: redhat-install-list at redhat.com
> > Subject: Re: Adding Users Command line
> >
> > On Tue, Oct 17, 2006 at 01:16:14PM -0700, Bret Stern wrote:
> > >
> > >
> > > When adding users from the (command line)
> > >
> > > useradd
> > >
> > > has an option -r which assigns a specific user id.
> >
> > Nope, that tells it to assign a "system-level" user id number, usually
> > less than 500 or 1000.  These are designed for pseudo users assigned
> > to subsystems and processes like mysql, procmail, backup, bin, et al.
> >
> > > Is it common to explicitly assign a user id?
> >
> > Only if you want to make it the same as on another system or to force
> > a duplicated UID.
> >
> > > What happens if I don't specifically assign a user id?
> >
> > It takes the next available UID in the desired range.  That's usually
> > figured by taking the highest occupied UID in the range and adding
> > one.
> >
> > > I'm assuming two users cannot have the same user id,
> > > so..how would you know the user id's of all your users?
> >
> > You don't need to, but if you must, look at the third field (delimited
> > by ':') in /etc/passwd.  Unless you have some good reason to specify a
> > UID, just let the system assign one.
> >
> > > Thanks
> >
> > Cheers,
> > --
> > Bob McClure, Jr.             Bobcat Open Systems, Inc.
> > bob at bobcatos.com             http://www.bobcatos.com
> > "Where you go in the hereafter depends on what you were after here."
> >   - Thanks to Graffiti, 2 March 2004
> >
> > _______________________________________________
> > Redhat-install-list mailing list
> > Redhat-install-list at redhat.com
> > https://www.redhat.com/mailman/listinfo/redhat-install-list
> > To Unsubscribe Go To ABOVE URL or send a message to:
> > redhat-install-list-request at redhat.com
> > Subject: unsubscribe
> >
>
>
> Thanks for the explanations.
>
> I'll look in my programming library for examples of
> using a user id for processing needs. But for my typical
> users needs, it's crystal clear now.
>
> Again, cheers
>
>
>
>
>
>
>
>
> ------------------------------
>
> Message: 5
> Date: Wed, 18 Oct 2006 02:32:30 -0700 (PDT)
> From: Naveed <humour_guy_in at yahoo.com>
> Subject: Problem installing RHEL 4.0  Hitachi SATA 80GB desksta
> To: redhat-install-list at redhat.com
> Message-ID: <20061018093230.10903.qmail at web52007.mail.yahoo.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> I am trying to install RHEL 4 , but my SATA Disk driver is not detected. I
> am using ASUS P5WDG2 WS and Hitachi deskstar 80gb Sata disk. I
> tried  installing  with every possible change in bios.
>
> Regards
> humorguy
>
> Reply Soon Or I Will Use Capital Letters
> In My Next Mail....
> **~~~~~~~~~^^^^^^^~~~~~~~~~~**
>
> I'll Take My Time Anywhere
> Free to Speak My Mind Anywhere
> I'll Redefine Anywhere
> Anywhere I ROAM.
> **~~~~~~~~~^^^^^^^~~~~~~~~~~**
> What would u do today, if u knew you would not fail.
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> ---------------------------------
> Do you Yahoo!?
> Get on board. You're invited to try the new Yahoo! Mail.
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL:
> https://www.redhat.com/archives/redhat-install-list/attachments/20061018/8e23333e/attachment.html
>
> ------------------------------
>
> _______________________________________________
> Redhat-install-list mailing list
> Redhat-install-list at redhat.com
> https://www.redhat.com/mailman/listinfo/redhat-install-list
>
> End of Redhat-install-list Digest, Vol 32, Issue 9
> **************************************************
>


-- 
Rahsaan D. Page
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listman.redhat.com/archives/redhat-install-list/attachments/20061018/3cb6085e/attachment.htm>