Cant open Dreamcast emu.cfg file to configurate controllers

[NinjaX567]

Im trying to play Dreamcast, but no matter how much i try, i cant open the emu.cfg file for button mapping. I instaled reicast, got the BIOS and ive checked and the emu.cfg file itself is in the memory. Regardless, i cd my way to the folder but i cant open the file. I went both to the .reicast folder and in the opt path. What do i do??

[backstander]

@NinjaX567
Make sure your Raspberry Pi is connected to your network and use another computer to SSH into it:
https://github.com/RetroPie/RetroPie-Setup/wiki/ssh

then type nano /opt/retropie/configs/dreamcast/emu.cfg or nano /home/pi/.reicast/emu.cfg

Make your changes, then press Ctrl+O to save and Ctrl+X to exit nano.

Quick Guide To nano Text Editor On The Raspberry Pi
http://www.raspberrypi-spy.co.uk/2013/11/quick-guide-to-nano-text-editor-on-the-raspberry-pi/

[NinjaX567]

@backstander I managed to open the emu.cfg file, but all the configs for a DS4 are set, so i have no idea why the game doesnt read my inputs, i cant get past the set time/date screen.

[backstander]

@NinjaX567
Please post the contents of your emu.cfg file. You can post it at pastebin.com and put the link to it in your reply.