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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(7)

AUTHOR
       pam_rootok was written by Andrew G. Morgan, .

Linux-PAM Manual                            09/19/2013                              PAM_ROOTOK(8)

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