Using ADB and xargs to interact with multiple devices

adb-xargs-commands.sh

# Install an app and keep it's data, on all connected devices
adb devices | tail -n +2 | cut -sf 1 | xargs -IX adb -s X install -r {me.jackwebb.app}

# Grant a permission to your app, on all connected devices
adb devices | tail -n +2 | cut -sf 1 | xargs -IX adb grant {me.jackwebb.app} {READ_CONTACTS}

# Run an intent, on all connected devices
adb devices | tail -n +2 | cut -sf 1 | xargs -IX adb start {me.jackwebb.app} {my intent here}


# This command works by creating a list of connected devices, then 
# using xargs to run your command against each device in the list.
# 
# I've included some common use cases here, but any adb command 
# (or any other command) can can be used, like this:
adb devices | tail -n +2 | cut -sf 1 | xargs -IX {your adb command here}