Install xcode command line tools without prompt

install_command_line_tools_no_prompt

do shell script "xcode-select --install"
do shell script "sleep 1"

tell application "System Events"
	tell process "Install Command Line Developer Tools"
		keystroke return
		click button "Agree" of window "License Agreement"
	end tell
end tell

Encountered exception when attempting to run it from Terminal

zsh: parse error near `do'

I don't know what this does anymore as it is from seven years ago, but it is an apple script so you will need to run it with applescript and not zsh

xcode-select --install > /dev/null 2>&1
if [ 0 == $? ]; then
    sleep 1
    osascript <<EOD
tell application "System Events"
    tell process "Install Command Line Developer Tools"
        keystroke return
        click button "Agree" of window "License Agreement"
    end tell
end tell
EOD
else
    echo "Command Line Developer Tools are already installed!"
fi