Windows batch files for useful Android ADB commands. Replace [device] with your device as listed from "adb devices" or remove the -s [device] entirely.

back key.bat

adb -s [device] shell input keyevent 4

home key.bat

adb -s [device] shell input keyevent 3

take screenshot.bat

adb -s [device] shell screencap -p /sdcard/screen.png
adb -s [device] pull -p -a /sdcard/screen.png
adb -s [device] shell rm /sdcard/screen.png

For /f "tokens=2-4 delims=/ " %%a in ('date /t') do (set mydate=%%c-%%a-%%b)
For /f "tokens=1-3 delims=/:" %%a in ("%TIME%") do (set mytime=%%a-%%b-%%c)
set mytime=%mytime: =%


move screen.png _Screenshots/Screenshot_%mydate%_%mytime%.png
start _Screenshots/Screenshot_%mydate%_%mytime%.png