Raspberry Pi Eth0 not working after Wifi setup

I have used the command line config tool to enable wifi but now that wifi is working it seems to have disabled the ethernet on the raspberry pi. I can’t see anything in /etc/interfaces referring to the ethernet socket now.

would anyone be able to supply the default config files for an ethernet connection which assumes it be configured by dhcp.

You might need to ask on an RPi or Raspbian forum. I only ever use wifi on my RPis and suspect most of the rest of OH users do the same.