/etc/apt

nazar_art@nazar-desctop:/etc/apt$ pwd
/etc/apt
nazar_art@nazar-desctop:/etc/apt$ ls -lg
total 80
drwxr-xr-x 2 root  4096 Jul 17 10:13 apt.conf.d
-rw-r----- 1 root   130 Jun 11 11:05 auth.conf
drwxr-xr-x 2 root  4096 Apr 20  2012 preferences.d
-rw------- 1 root     0 Jul 25 12:31 secring.gpg
-rw-r--r-- 1 root  3589 Jul 25 13:30 sources.list.backup
drwxr-xr-x 2 root  4096 Jul 25 12:52 sources.list.d
-rw-r--r-- 1 root  3597 Jul 25 13:23 sources.list.save
-rw------- 1 root  1200 Jun 11 11:27 trustdb.gpg
-rw-r--r-- 1 root 21945 Jul 25 12:31 trusted.gpg
-rw-r--r-- 1 root 21584 Jun 24 15:41 trusted.gpg~
drwxr-xr-x 2 root  4096 Apr 20  2012 trusted.gpg.d