[英]Mac PackageMaker : Do actions only if a file doesn't exist
How can I make some conditional actions only if a file doesn't exist ? 仅当文件不存在时,才可以执行一些条件操作?
I found the requirement check "If file exists" but not "If file doesn't exist". 我发现需求检查为“如果文件存在”,但不是“如果文件不存在”。
Perhaps using an apple script in the pre-install check? 也许在安装前检查中使用了Apple脚本?
Thanks in advance for your help 在此先感谢您的帮助
Here's an example... 这是一个例子
set someFile to (path to desktop as text) & "sample.txt"
tell application "Finder"
if not (exists file someFile) then
-- do something here
end if
end tell
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