How can I adb install an apk to multiple connected devices?

Question

I have 7 devices plugged into my development machine.

Normally I do adb install and can install to just a single device.

Now

Answer 1

Another short option... I stumbled on this page to learn that the -s $SERIAL has to come before the actual adb command! Thanks stackoverflow!

for SERIAL in $(adb devices | grep -v List | cut -f 1);
do `adb -s $SERIAL install -r /path/to/product.apk`;
done