find_package_files.bash: Shows files installed by package PKGID that are currently present on the system.

find_package_files.bash

#!/bin/bash

# Copyright 2020 Google LLC.
# SPDX-License-Identifier: Apache-2.0

function usage {
	cat <<EOF
Usage:
	$(basename $0) PKGID

Shows files installed by package PKGID that are currently present on the system.
EOF
	exit 2
}

function find_package_files {
	PKGID="$1"
	PKGUTIL_INFO=$(mktemp)
	pkgutil --pkg-info-plist "$PKGID" >"$PKGUTIL_INFO.plist" || exit $?
	VOLUME=$(defaults read "$PKGUTIL_INFO" volume)
	LOCATION=$(defaults read "$PKGUTIL_INFO" install-location)
	pkgutil --files "$PKGID" | while read file
	do
		if [ -f "$VOLUME$LOCATION/$file" ]; then
			echo "$VOLUME$LOCATION/$file"
		fi
	done
}

[ -z "$1" ] && { usage; }
find_package_files "$1"