如何在调用 shell 中检测 osascript 报告的按钮按下？

Question

I'm currently working on a script to notify a user when their password will expire. The prompt appears, but no matter what button I press, it results to the same outcome, "Change Later was chosen". Any ideas?

#!/bin/bash
button=$(osascript -e 'tell application "System Events" to display dialog "Change password now or later?" buttons {"Change Later", "Change Now"} default button 1 with title "Password Update Required" with icon caution')

if [[ $button = "Change Now" ]]; then
    open /System/Library/PreferencePanes/Accounts.prefPane
    echo "Opening Preferences"
else
    echo "Change Later was chosen"
    exit 0
fi

Answer 1

osascript doesn't simply output the name of the button you press; it outputs a more "descriptive" string, prefixed with button returned: . You need to account for that in your check:

if [[ $button = "button returned:Change Now" ]]

Answer 2

Also worth considering is that you are free to perform the check that determines which button was pressed in the AppleScript portion of the code as well, which in some ways makes more sense, as you can open System Preferences with it too:

#!/usr/bin/env bash
osascript << OSA 2>/dev/null && exit 0 || echo "Change Later was chosen"
display dialog "Change password now or later?" buttons ¬
        {"Change Later", "Change Now"} default button 1 ¬
        with title "Password Update Required" with icon caution

if the button returned of the result ¬
        is "Change Later" then error

tell application id "com.apple.SystemPreferences"
        reveal pane id "com.apple.preferences.users"
        repeat until the id of the current pane is ¬
                "com.apple.preferences.users"
                delay 0.5
        end repeat
        activate
end tell
OSA

Here, rather than saving the outcome of the script to a variable, the exit status of osascript reflects the user's choice: "Change Later" terminates osascript with an error, thus returning an exit status of 1 ; "Change Now" allows the script to progress onward and opens System Preferences to the Users & Groups pane, before returning an exit status of 0 .