Déconnexion automatique avec la commande su

Salut,

Montre un exemple concret, tape les commandes et affiche ce que tu vois à l'écran.

Salut lami20j
voici un exemple concret, je crée un utilisateur d avec la commande
sudo useradd d
Avec son mot de passe
sudo passwd d (d toujours)
Puis je me login
su d (et je tape son mot de passe) le console devient:
d@ders21-laptop:~$
Mais après 5 secondes je me deconnecte, le console affiche:
d@ders21-laptop$ Processus arrêté
ders21@ders21-laptop:~$ Et voilà je reviens sur le point de depart.

Resultat sudo tail /var/log/{messages,auto.log,syslog} après deconnexion automatique

==> /var/log/messages <==
Sep 17 15:57:52 ders21-laptop sudo: Warning: Using default salt value (undefined in ~/.ecryptfsrc)
Sep 17 15:57:54 ders21-laptop sudo: Passphrase key already in keyring; rc = [1]
Sep 17 15:57:54 ders21-laptop sudo: Passphrase key already in keyring; rc = [1]
Sep 17 15:57:54 ders21-laptop sudo: There is already a key in the user session keyring for the given passphrase.
Sep 17 16:02:47 ders21-laptop sudo: pam_sm_authenticate: Called
Sep 17 16:02:47 ders21-laptop sudo: pam_sm_authenticate: username = [ders21]
Sep 17 16:02:47 ders21-laptop sudo: Warning: Using default salt value (undefined in ~/.ecryptfsrc)
Sep 17 16:02:48 ders21-laptop sudo: Passphrase key already in keyring; rc = [1]
Sep 17 16:02:49 ders21-laptop sudo: Passphrase key already in keyring; rc = [1]
Sep 17 16:02:49 ders21-laptop sudo: There is already a key in the user session keyring for the given passphrase.
tail: Ne peut ouvrir '/var/log/auto.log' en lecture: Aucun fichier ou dossier de ce type

==> /var/log/syslog <==
Sep 17 16:02:47 ders21-laptop sudo: pam_sm_authenticate: username = [ders21]
Sep 17 16:02:47 ders21-laptop sudo: Warning: Using default salt value (undefined in ~/.ecryptfsrc)
Sep 17 16:02:48 ders21-laptop sudo: Passphrase key already in keyring; rc = [1]
Sep 17 16:02:48 ders21-laptop sudo: ecryptfs_add_passphrase_key_to_keyring: Error adding auth tok with sig [127accea0b3c4d20] to the keyring; rc = [1]
Sep 17 16:02:48 ders21-laptop sudo: Error attempting to add filename encryption key to user session keyring; rc = [1]
Sep 17 16:02:49 ders21-laptop sudo: Passphrase key already in keyring; rc = [1]
Sep 17 16:02:49 ders21-laptop sudo: ecryptfs_add_passphrase_key_to_keyring: Error adding auth tok with sig [ac0471a4410d5a3f] to the keyring; rc = [1]
Sep 17 16:02:49 ders21-laptop sudo: Error attempting to add passphrase key to user session keyring; rc = [1]
Sep 17 16:02:49 ders21-laptop sudo: There is already a key in the user session keyring for the given passphrase.
Sep 17 16:05:01 ders21-laptop /USR/SBIN/CRON[4607]: (www-data) CMD (php /usr/share/cacti/site/poller.php >/dev/null 2>/var/log/cacti/poller-error.log)

pour /etc/passwd
/home/d:/bin/bash

et pour ls -l /home
drwxr-xr-x 2 d d 4096 2010-09-17 16:03 d
drwxr-xr-x 291 ders21 ders21 24576 2010-09-17 16:02 ders21

Re,

Affiche juste sudo tail /var/log/auth.log juste après avoir faire su d

Voici chez moi pour su toto (regarde en gras)
Chez toi je ne vois pas que tu as fait su j'ai mis en gras

lami20j@debian-acer:~$ sudo tail -f /var/log/auth.log
Sep 17 20:37:55 debian-acer su[3266]: + /dev/pts/0 lami20j:toto
Sep 17 20:37:55 debian-acer su[3266]: pam_unix(su:session): session opened for user toto by lami20j(uid=1000)
Sep 17 20:37:58 debian-acer su[3266]: pam_unix(su:session): session closed for user toto
Sep 17 20:38:36 debian-acer sudo:  lami20j : TTY=pts/2 ; PWD=/home/lami20j ; USER=root ; COMMAND=/usr/bin/tail -f /var/log/auth.log
Sep 17 20:39:01 debian-acer CRON[3320]: pam_unix(cron:session): session opened for user root by (uid=0)
Sep 17 20:39:02 debian-acer CRON[3320]: pam_unix(cron:session): session closed for user root
Sep 17 20:40:38 debian-acer su[3337]: Successful su for toto by lami20j
Sep 17 20:40:38 debian-acer su[3337]: + /dev/pts/0 lami20j:toto
Sep 17 20:40:38 debian-acer su[3337]: pam_unix(su:session): session opened for user toto by lami20j(uid=1000)
Sep 17 20:40:52 debian-acer sudo:  lami20j : TTY=pts/2 ; PWD=/home/lami20j ; USER=root ; COMMAND=/usr/bin/tail -f /var/log/auth.log

Et après exit

lami20j@debian-acer:~$ sudo tail -f /var/log/auth.log
Sep 17 20:37:58 debian-acer su[3266]: pam_unix(su:session): session closed for user toto
Sep 17 20:38:36 debian-acer sudo:  lami20j : TTY=pts/2 ; PWD=/home/lami20j ; USER=root ; COMMAND=/usr/bin/tail -f /var/log/auth.log
Sep 17 20:39:01 debian-acer CRON[3320]: pam_unix(cron:session): session opened for user root by (uid=0)
Sep 17 20:39:02 debian-acer CRON[3320]: pam_unix(cron:session): session closed for user root
Sep 17 20:40:38 debian-acer su[3337]: Successful su for toto by lami20j
Sep 17 20:40:38 debian-acer su[3337]: + /dev/pts/0 lami20j:toto
Sep 17 20:40:38 debian-acer su[3337]: pam_unix(su:session): session opened for user toto by lami20j(uid=1000)
Sep 17 20:40:52 debian-acer sudo:  lami20j : TTY=pts/2 ; PWD=/home/lami20j ; USER=root ; COMMAND=/usr/bin/tail -f /var/log/auth.log
Sep 17 20:41:47 debian-acer su[3337]: pam_unix(su:session): session closed for user toto
Sep 17 20:41:51 debian-acer sudo:  lami20j : TTY=pts/2 ; PWD=/home/lami20j ; USER=root ; COMMAND=/usr/bin/tail -f /var/log/auth.log