Take a screenshot from phone connected over adb, and save it to desktop.

adb-screenshot.bat

@echo off

REM Screenshots will be saved to save directory
REM where your script is running.

REM  Generate filename as timestamp
set FILENAME=%DATE:/=-%@%TIME::=-%
set FILENAME=%FILENAME: =%
set FILENAME=%FILENAME:,=.%.png

REM Capture a screenshot and save to /sdcard/screen.png on your Android device.
adb shell screencap -p /sdcard/screen.png

REM Grab the screenshot from /sdcard/screen.png to /tmp/screen.png on your PC.
adb pull /sdcard/screen.png ./%FILENAME%

REM Delete /sdcard/screen.png
adb shell rm /sdcard/screen.png