We can configure accessible space of CGI. The followings are our root directory. Note that /usr , /adm and many other names are hided.
--rw-rw-r-- M 170 arisawa sys 51 Oct 30 2004 /README d-rwxrwxr-x M 170 sys sys 0 Jul 8 23:18 /bin d-rwxr-xr-x M 170 arisawa webu 0 Nov 7 2002 /bin d-r-xr-xr-x c 0 arisawa arisawa 0 Sep 3 16:20 /dev d-rwxrwxr-x M 170 arisawa webu 0 May 13 2017 /doc d-r-xr-xr-x e 0 arisawa arisawa 0 Sep 3 16:20 /env d-rwxrwxr-x M 170 arisawa sys 0 Dec 29 2001 /etc d-rwxr-xr-x M 170 arisawa webu 0 Oct 4 2014 /etc --rw-r----- M 170 arisawa web 346216 Oct 30 2014 /index d-rwxrwxr-x M 170 sys sys 0 Sep 2 05:47 /lib d-rwxr-x--- M 170 arisawa web 0 Oct 20 2014 /log d-rwxrwxr-x M 170 arisawa sys 0 Dec 29 2001 /mnt d-r-xr-xr-x p 0 arisawa arisawa 0 Sep 3 16:20 /proc d-rwxrwxr-x M 170 arisawa sys 0 May 3 2002 /rc d-rwxrwxr-x M 170 arisawa sys 0 Mar 28 2016 /sys d-r-xr-xr-x | 0 arisawa arisawa 0 Sep 3 16:20 /tmp d-rwxrwxr-x M 170 arisawa sys 0 May 12 2012 /usr