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我使用 PackageMaker 创建安装包。以下是我preinstall script要被调用的Installer：

#!/bin/sh
/usr/bin/osascript <<EOF
tell application "System Events"
if exists (application process "Dictionary") then
    tell application "Dictionary" to quit
end if
end tell
set theFolder to (path to library folder as text) & "Dictionaries:"
set fileNames to {"dict1.dictionary", "dict2.dictionary", "dict3.dictionary", "dict_n.dictionary"}
set dict to {}
repeat with aFile in fileNames
tell application "Finder"
    if exists file (theFolder & aFile as text) then set end of dict to aFile & return
end tell
end repeat
try
tell application "System Events"
    if dict ≠ {} then display alert "You have XYZ installed" message "Choose 'Upgrade' to install the new version or 'Cancel' if you want to stay with the current version." & return & dict buttons {"Cancel", "Upgrade"} default button "Upgrade"
    if the button returned of the result is "Cancel" then
        tell current application
            set app_name to "Installer"
            set the_pid to (do shell script "ps ax | grep " & (quoted form of app_name) & " | grep -v grep | awk '{print $1}'")
            if the_pid is not "" then do shell script ("kill -9 " & the_pid)
        end tell
    end if

end tell
end try
EOF

该脚本在 AppleScript 编辑器和终端中运行良好，即如果字典应用程序正在运行，它会关闭它，如果用户选择取消，它会强制退出安装程序。

但是，在安装过程中调用时，它只是部分运行：它关闭 Dictionary 应用程序，但在选择取消按钮时绕过强制退出安装程序。请注意，我已经完成chmod 755了preinstall文件。

我错过了什么？我做错了什么？你能帮忙吗？

非常感谢。

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