$ pwd
/etc/apt/apt.conf.d

$ ll
total 60K
drwxr-xr-x 2 root root 4.0K Nov 25 23:06 ./
drwxr-xr-x 6 root root 4.0K Nov 17 17:06 ../
-rw-r--r-- 1 root root   49 Jan  5  2014 00aptitude
-rw-r--r-- 1 root root   40 Jan  5  2014 00trustcdrom
-rw-r--r-- 1 root root  350 Jul 16  2013 01autoremove
-rw-r--r-- 1 root root  630 Nov 25 23:06 01autoremove-kernels
-rw-r--r-- 1 root root  157 Apr 19  2013 05aptitude
-rw-r--r-- 1 root root  129 Dec 17  2012 10periodic
-rw-r--r-- 1 root root  108 Dec 17  2012 15update-stamp
-rw-r--r-- 1 root root   85 Dec 17  2012 20archive
-rw-r--r-- 1 root root  123 Apr 20  2012 20changelog
-rw-r--r-- 1 root root  243 Dec 16  2009 20dbus
-rw-r--r-- 1 root root 2.1K Nov 15  2012 50unattended-upgrades
-rw-r--r-- 1 root root  182 Mar 15  2012 70debconf
-rw-r--r-- 1 root root  231 Dec 17  2012 99update-notifier