OSX: Where has the AppStore been downloaded?

If you need to retain the installed software installation package downloaded from the App Store for backup, you can do this:

Exit the App Store and run it on the terminal: Defaults write com. apple. appstore ShowDebugMenu-bool trueRun the App Store, start the upgrade, and pause immediately. Select: Show Download Folder...By sorting the update date, you can find the downloaded file on the terminal and establish a hard connection, for example: Ln/private/var/folders/y0/w0ls6mdj3rx33hfndfm_zqbsr3h2g4/C/com. apple. SoftwareUpdate/logs ~ /Desktop/A. pkgAfter the App Store continues and is installed, the installation package is retained on the desktop.
Of course, each update indicates that a connection cannot be attached, or you can use the download website that connects to Apple to find and download the installation package.