l /etc/pam.d/
total 82
drwxr-xr-x   2 root root  536 Apr 30 19:36 ./
drwxr-xr-x  61 root root 5424 May  2 22:59 ../
-rw-r--r--   1 root root  167 Mar 20 00:23 chage
-rw-r--r--   1 root root  199 Mar 20 00:23 chfn
-rw-r--r--   1 root root  199 Mar 20 00:23 chsh
-rw-r--r--   1 root root  378 Mar 19 22:11 common-account
-rw-r--r--   1 root root  448 Mar 19 22:11 common-auth
-rw-r--r--   1 root root  861 Mar 19 22:11 common-password
-rw-r--r--   1 root root  405 Mar 19 22:11 common-session
-rw-------   1 root root  247 Mar 19 22:23 crond
-rw-r--r--   1 root root  633 Apr 30 19:35 ftp
-rw-r--r--   1 root root  133 Mar 19 22:20 imap
-rw-r--r--   1 root root  264 Mar 20 00:23 login
-rw-r--r--   1 root root  251 Mar 19 22:11 other
-rw-r--r--   1 root root  133 Mar 20 00:23 passwd
-rw-r--r--   1 root root  133 Mar 19 22:20 pop
-rw-r--r--   1 root root  165 Mar 20 00:23 rpasswd
-rw-r--r--   1 root root  209 Mar 20 00:23 shadow
-rw-r--r--   1 root root  367 Mar 22 20:00 sshd
-rw-r--r--   1 root root  239 Mar 20 01:00 su
-rw-r--r--   1 root root  172 Mar 20 00:23 useradd