@echo on
adb.exe wait-for-device

adb shell getprop ro.serialno > d:\test\test.txt

Setlocal Enabledelayedexpansion
for /f "delims=" %%i in (d:\test\test.txt) do (
set /a n+=1 & if !n!==1 set "var=%%i")
::if "%var%"=="" (echo 数据为空。) else (echo %var%) 
echo;%var%

set dir=d:\test\
set afterfix=.txt
set result=%dir%%var%%afterfix%
echo %result%
echo %var% >  %result%

adb shell "getprop ro.build.version.incremental" >  %result%

move %result% "D:\test2\"

pause