/etc/apt/:
insgesamt 31
drwxr-xr-x   6 root root  336 2012-02-18 22:03 .
drwxr-xr-x 125 root root 6168 2012-02-19 09:47 ..
drwxr-xr-x   2 root root  472 2012-02-18 22:24 apt.conf.d
drwxr-xr-x   2 root root   48 2011-10-06 17:37 preferences.d
-rw-r--r--   1 root root 3662 2012-02-18 22:03 sources.list
-rw-r--r--   1 root root    0 2012-02-18 21:40 sources.list~
drwxr-xr-x   2 root root   48 2011-10-06 17:37 sources.list.d
-rw-------   1 root root 1200 2012-02-18 21:40 trustdb.gpg
-rw-r--r--   1 root root 7304 2012-02-18 21:54 trusted.gpg                                                                                                                          
-rw-r--r--   1 root root 6713 2012-02-18 21:40 trusted.gpg~                                                                                                                         
drwxr-xr-x   2 root root   48 2011-10-06 17:37 trusted.gpg.d                                                                                                                        
                                                                                                                                                                                    
/etc/apt/apt.conf.d:                                                                                                                                                                
insgesamt 53                                                                                                                                                                        
drwxr-xr-x 2 root root  472 2012-02-18 22:24 .                                                                                                                                      
drwxr-xr-x 6 root root  336 2012-02-18 22:03 ..                                                                                                                                     
-rw-r--r-- 1 root root   81 2012-02-18 21:40 00CDMountPoint                                                                                                                         
-rw-r--r-- 1 root root   40 2012-02-18 21:40 00trustcdrom                                                                                                                           
-rw-r--r-- 1 root root  430 2011-10-06 17:37 01autoremove                                                                                                                           
-rw-r--r-- 1 root root  157 2011-08-08 23:00 05aptitude                                                                                                                             
-rw-r--r-- 1 root root  129 2008-11-11 12:19 10periodic                                                                                                                             
-rw-r--r-- 1 root root  108 2008-11-11 12:19 15update-stamp                                                                                                                         
-rw-r--r-- 1 root root   85 2008-11-11 12:19 20archive                                                                                                                              
-rw-r--r-- 1 root root  123 2011-10-06 17:37 20changelog                                                                                                                            
-rw-r--r-- 1 root root  243 2009-12-16 09:02 20dbus                                                                                                                                 
-rw-r--r-- 1 root root 1921 2011-07-19 16:51 50unattended-upgrades                                                                                                                  
-rw-r--r-- 1 root root  182 2011-06-23 09:01 70debconf                                                                                                                              
-rw-r--r-- 1 root root   32 2012-02-19 09:50 99synaptic                                                                                                                             
-rw-r--r-- 1 root root  231 2010-06-01 15:19 99update-notifier                                                                                                                      

/etc/apt/preferences.d:
insgesamt 0
drwxr-xr-x 2 root root  48 2011-10-06 17:37 .
drwxr-xr-x 6 root root 336 2012-02-18 22:03 ..

/etc/apt/sources.list.d:
insgesamt 0
drwxr-xr-x 2 root root  48 2011-10-06 17:37 .
drwxr-xr-x 6 root root 336 2012-02-18 22:03 ..

/etc/apt/trusted.gpg.d:
insgesamt 0
drwxr-xr-x 2 root root  48 2011-10-06 17:37 .
drwxr-xr-x 6 root root 336 2012-02-18 22:03 ..
olli@Bart:~$ ls -la von /etc/apt/sources.list.d
ls: Zugriff auf von nicht möglich: Datei oder Verzeichnis nicht gefunden
/etc/apt/sources.list.d:
insgesamt 0
drwxr-xr-x 2 root root  48 2011-10-06 17:37 .
drwxr-xr-x 6 root root 336 2012-02-18 22:03 ..