I am new to linux. I just installed linux on my laptop and whenever I tried to type a backslash key, '>' appears instead. I once came across a post that guided me to write a shell script using xmodmap -e "keycode 94 = backslash bar". However, I am unable to make that script to run automatically when I start the OS. Can anyone please guide me how to do so? Thanks lot.

This is the current script that I once saw online:
touch fix_keyboard.sh
chmod +x fix_keyboard.sh
nano fix_keyboard.sh
type in = xmodmap -e "keycode 94 = backslash bar"