Use this command to fix the issue where the \\ key produces # on a Raspberry Pi. To tempoarily fix this issue, enter this command in Terminal.
setxkbmap -layout us
Once the Raspberry Pi is rebooted, the keyboard layout will return to it's prior mapping. Follow these steps to make this change permanent.
- In Terminal, type nano /etc/default/keyboard
- Type the following line: XKBLAYOUT="US"
- Press Ctrl O (to save)
- Press Ctrl X (to exit the nano editor)