suauth(5)               File Formats and Configuration               suauth(5)

<?><?><?>
       suauth - <?><?><?><?> <?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?> su

<?><?><?><?><?><?><?><?>
       /etc/suauth

<?><?><?><?><?><?><?><?>
       The file /etc/suauth is referenced whenever the su command is called.
       It can change the behaviour of the su command, based upon:

                 1) the user su is targeting


       2) <?><?><?><?><?><?><?><?><?><?><?><?>,
       <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?> su
       (<?><?><?> <?><?><?><?><?><?>, <?><?><?><?><?><?> <?><?><?><?><?><?><?>
       <?><?> <?><?><?><?><?> <?><?><?><?>)

       <?><?><?><?><?><?> <?><?><?><?><?> <?><?><?><?><?><?><?> <?><?><?><?>,
       <?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?><?> <?> #
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?><?> <?>
       <?><?><?><?><?><?><?><?><?><?><?><?>;

                 to-id:from-id:ACTION


       Where to-id is either the word ALL, a list of usernames delimited by
       "," or the words ALL EXCEPT followed by a list of usernames delimited
       by ",".

       from-id is formatted the same as to-id except the extra word GROUP is
       recognized.  ALL EXCEPT GROUP is perfectly valid too. Following GROUP
       appears one or more group names, delimited by ",". It is not sufficient
       to have primary group id of the relevant group, an entry in
       /etc/group(5) is necessary.

       <?> <?><?><?><?> <?><?><?><?><?><?><?><?> <?><?><?><?><?> <?><?><?><?>
       <?><?><?><?><?><?> <?><?><?><?> <?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?>:

       DENY
           <?><?><?><?><?><?><?> su <?><?><?><?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?>, <?><?><?><?> <?><?>
           <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>.

       NOPASS
           <?><?><?><?><?><?><?> su <?><?><?><?><?><?><?><?><?><?><?>
           <?><?><?> <?><?><?><?><?><?><?> <?><?><?><?><?><?>.

       OWNPASS
           <?><?><?><?><?> <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?> su, <?><?><?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?> <?><?><?><?><?><?> <?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>.

       <?><?><?><?><?><?><?>, <?><?><?> <?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?> <?><?><?><?>,
       <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?>.
       <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?> <?><?>
       <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?>. <?><?><?><?><?> <?><?><?><?><?><?><?>,
       <?><?><?> <?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?> <?><?> <?><?><?><?><?><?><?>, <?> <?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?> <?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?> <?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>. <?><?><?>
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?>
       <?><?><?><?><?><?><?><?>, <?><?><?><?><?> <?><?>
       <?><?><?><?><?><?><?><?>.

<?><?><?><?><?><?>
                 # sample /etc/suauth file
                 #
                 # A couple of privileged usernames may
                 # su to root with their own password.
                 #
                 root:chris,birddog:OWNPASS
                 #
                 # Anyone else may not su to root unless in
                 # group wheel. This is how BSD does things.
                 #
                 root:ALL EXCEPT GROUP wheel:DENY
                 #
                 # Perhaps terry and birddog are accounts
                 # owned by the same person.
                 # Access can be arranged between them
                 # with no password.
                 #
                 terry:birddog:NOPASS
                 birddog:terry:NOPASS
                 #


<?><?><?><?><?>
       /etc/suauth

<?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?> <?><?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?>. <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?>, <?>
       <?><?><?><?><?><?><?><?><?>, <?><?> <?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>,
       <?><?><?><?><?><?>, <?><?><?> <?><?> <?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>
       (<?><?><?><?><?> <?><?><?> <?> <?><?><?><?><?><?> <?> <?><?><?><?><?>
       <?><?><?><?><?>) <?> <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?>,
       <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?>.

<?><?><?><?><?><?><?><?><?><?><?>
       An error parsing the file is reported using syslogd(8) as level ERR on
       facility AUTH.

<?><?><?><?><?><?><?><?> <?><?><?><?><?>
       su(1).

shadow-utils 4.15.1               04/01/2024                         suauth(5)