Read 2FA code from window. source: https://apple.stackexchange.com/questions/336842/get-two-factor-authentication-code-from-terminal

read-2fa-code-zh_tw.sh

#! /usr/bin/env osascript
tell application "System Events"
    if name of every process contains "FollowUpUI" then
        tell window 1 of process "FollowUpUI"
            click button "允許"
            delay 2
            set code to value of static text 1 of group 1
            log (code)
            click button "完成"
        end tell
    else
        log ("Couldn't find 2FA window")
    end if
end tell
return

read-2fa-code.sh

#! /usr/bin/env osascript
tell application "System Events"
    if name of every process contains "FollowUpUI" then
        tell window 1 of process "FollowUpUI"
            click button "Allow"
            delay 2
            set code to value of static text 1 of group 1
            log (code)
            click button "Done"
        end tell
    else
        log ("Couldn't find 2FA window")
    end if
end tell
return