adb: wrapper for Golang

requirements

• adb, from android sdk or android-tools-adb
• fb-adb for ScreenCapture/ScreensCapture

Features

• input keyevents: tap, swipe, turn on/off screen
• simple process management: pgrep, pkill, am start
• screen capture: single capture, streamlined captures
• status monitoring: dumpsys
• runs on Android, USB host, and remote host from SSH