all the stuff without any android-studio!

android.sh

# make sure to not have conflicts..
sudo apt remove android-sdk{,-platform-tools,-build-tools} adb
sudo apt autoremove

mkdir ~/GREEN_LAB
cd ~/GREEN_LAB

# https://developer.android.com/studio/#command-tools
wget https://dl.google.com/android/repository/sdk-tools-linux-4333796.zip -O android-sdk-tools.zip

unzip -d android-sdk android-sdk-tools.zip

./android-sdk/tools/bin/sdkmanager 'platform-tools' 'system-images;android-28;google_apis;x86_64'

./android-sdk/tools/bin/avdmanager create avd --name greeny --device 'Nexus 6P' --package 'system-images;android-28;google_apis;x86_64'

echo 'export ANDROID_SDK_ROOT="$HOME/GREEN_LAB/android-sdk"' >> ~/.zshenv
echo 'export PATH="$PATH:$ANDROID_SDK_ROOT/platform-tools"' >> ~/.zshenv

./android-sdk/tools/emulator '@greeny'

which adb
# /home/jnes/GREEN_LAB/android-sdk/platform-tools/adb