05-22-2014
Quote:
Originally Posted by
-=XrAy=-
a short answer: Using the same UID for more than one user is not possible respectively not allowed.
Sorry to correct you, but it possible and allowed as well. In fact we have the same (IMHO silly, but it wasn't my decision) system in effect at the company i work for right now.
You simply edit "/etc/passwd" directly, using any text editor and set the user-ID there. A "root" user (with the special rights available to this account) is "root" because it has UID 0, not the other way round. Therefore, as soon as any user has UID 0, it is considered to be root(-equivalent), regardless of its name.
I hope this helps.
bakunin
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LEARN ABOUT CENTOS
pam_rootok
PAM_ROOTOK(8) Linux-PAM Manual PAM_ROOTOK(8)
NAME
pam_rootok - Gain only root access
SYNOPSIS
pam_rootok.so [debug]
DESCRIPTION
pam_rootok is a PAM module that authenticates the user if their UID is 0. Applications that are created setuid-root generally retain the
UID of the user but run with the authority of an enhanced effective-UID. It is the real UID that is checked.
OPTIONS
debug
Print debug information.
MODULE TYPES PROVIDED
The auth, acct and password module types are provided.
RETURN VALUES
PAM_SUCCESS
The UID is 0.
PAM_AUTH_ERR
The UID is not0.
EXAMPLES
In the case of the su(1) application the historical usage is to permit the superuser to adopt the identity of a lesser user without the use
of a password. To obtain this behavior with PAM the following pair of lines are needed for the corresponding entry in the /etc/pam.d/su
configuration file:
# su authentication. Root is granted access by default.
auth sufficient pam_rootok.so
auth required pam_unix.so
SEE ALSO
su(1), pam.conf(5), pam.d(5), pam(8)
AUTHOR
pam_rootok was written by Andrew G. Morgan, <morgan@kernel.org>.
Linux-PAM Manual 09/19/2013 PAM_ROOTOK(8)