The following were done on a Raspberry Pi 3B+ running Raspbian Linux with the following architecture:
root@raspberrypi:/home/pi# uname -a
Linux raspberrypi 4.19.50-v7+ #896 SMP Thu Jun 20 16:11:44 BST 2019 armv7l GNU/Linux
root@raspberrypi:/home/pi# dpkg --print-architecture
armhf