adb devices
cd /path/to/extracted/folder/
cd /Users/Doug/Desktop/platform-tools/
adb devices
adb devices
if everything was successful, you should see your device’s serial number in macOS’s Terminal windowcd /path/to/extracted/folder/
cd /Users/Doug/Desktop/platform-tools/
adb devices
adb devices
if everything was successful, you should see your device’s serial number in your Linux OS Terminal windowsudo apt-get install adb
sudo yum install android-tools