REM Install APK

@echo off
setlocal enableDelayedExpansion
set apk="C:\Users\Shuangwei\Downloads\Ragnarok Labyrinth NFT_45.2425.3_apkcombo.com.apk"

REM used to remove 'device' from each line
set "replace=device"
set "replaced="
set "source=test.txt"
set "target=clean.txt"
REM adb command to grab all connected devices
adb devices > adb.txt
findstr /v "List of devices attached" adb.txt > test.txt
(
   for /F "tokens=1* delims=:" %%a in ('findstr /N "^" %source%') do (
      set "line=%%b"
      if defined line set "line=!line:%replace%=%replaced%!"
      echo(!line!)
) > %target%
REM with the 'clean' file of just device IDs, set them as elements of an array
set idi=0
for /F "usebackq" %%A in (clean.txt) do (
    SET /A idi=!idi! + 1
    set var!idi!=%%A
)
set var

set "replace1=."
set "replace2=:"
set "empty="

@echo on
for /L %%x in (1, 1, %idi%) do (
    set "line=!var%%x!"
    if defined line set "line=!line:%replace1%=%empty%!"
    if defined line set "line=!line:%replace2%=%empty%!"

    adb -s !var%%x! install -r !apk!)
pause