Lowercase: xdotool
apt install xdotool
export DISPLAY=:0.0 xdotool key A
If you use the "key" it sends a single key stroke, if you use "type" it sends multiple
xdotool type Some words.
Refresh Google Chrome web browser on a remote computer via this command in ssh shell
xdotool search --class Chrome windowactivate --sync %1 key F5 windowactivate $(xdotool getactivewindow)
You can easily discover the key name by using
xev