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bashmacosenvironment-variablespkg-file

When my pkg runs its Post-installation script, how can I know how that happened?

There are two ways this script can be run: When the user opens the pkg file and goes through the normal GUI setup, or when an admin (or savvy user) runs sudo installer -pkg /path/to/Installer.pkg -target /. For the second one, I want to know when the script was run in this mode so I can make more admin-friendly decisions like not opening another GUI. How do I know when my pkg is installed via the command line?

I'm hoping for some environment variable or something similar.

Solution

  • Since this was being run by the installer command, the COMMAND_LINE_INSTALL environment variable is set to 1. When opening the pkg normally, this variable is not set at all.

    So:

    if [ $COMMAND_LINE_INSTALL ]; then 
    # Do stuff for CLI land
else
    # Do stuff for GUI land
fi