04-30-2013
There's no guarantee that upon a system reinstallation UIDs remain the same.
Whatever user that used to belong to UID 504 apparently no longer matches its new UID.
You can chown -R your home dir, or modify the UID in /etc/passwd.
This User Gave Thanks to verdepollo For This Post:
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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)