pkgutil

Query and manipulate Mac OS X Installer packages and receipts. More information: https://ss64.com/osx/pkgutil.html.

• List package IDs for all installed packages:
  pkgutil --pkgs
• Verify cryptographic signatures of a package file:
  pkgutil --check-signature {{path/to/filename.pkg}}
• List all the files for an installed package given its ID:
  pkgutil --files {{com.microsoft.Word}}
• Extract the contents of a package file into a directory:
  pkgutil --expand-full {{path/to/filename.pkg}} {{path/to/directory}}