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如何检查是否从 Mac App Store 下载并安装了 Mac 应用程序？
我试图在应用程序的 info.plist 中找到有关安装过程的任何线索。
检查 App Receipt 是否存在：
/Applications/Something.app/Contents/_MASReceipt/receipt
如果它存在，那么这个应用程序是从 Mac App Store 下载的，否则它是从 Mac App Store 之外下载的。