To make it easier to change keyboard layout on a raspberry pi I wrote a small shell script. Be warned, this is one of my first scripts. So it is not optimal, and no guarantees. Use at your own risk.
clear
echo "--------------------------------"
echo "Script to change keyboard layout"
echo "--------------------------------"
echo "Which layout should be used? tr=turkish, se=swedish, gb=english etc"
read layout
sudo sed -i 's|XKBLAYOUT=....|XKBLAYOUT="'$layout'"|g' /etc/default/keyboard
echo "Changed to"
grep "XKBLAYOUT" /etc/default/keyboard | sed 's/XKBLAYOUT=\(....\)/\1/g'
sleep 1
sudo reboot
exit 0
Save the code to a file change_keyboard.sh (or downoad from here). Then add execute permission on that file with the command chmod 755 change_keyboard.sh
Then you can run the file with ./change_keyboard.sh
Look in this list to find the 2 character code for the country layout you want to use.