raspbian /etc/network/interfaces always empty

[sdecorme]

Hi,
I work on a Rasp V2 with the last jessie.
I try to put a static address to my board.
The board is connected to my box
ifconfig give me inet addr 192.168.1.19
everything seems to look fine I can access to internet with the web browser.
On the web I saw to use this command line to modify the parameters:

Code: Select all

sudo nano /etc/network/interfaces

the text editor open correctly but the windows is empty.
If I try to look for the file in the file manager the directory is empty.

Thanks for your help.