Windows commands to start and stop multiple processes

Windows Command Prompt:

Open multiple command prompt in one go:
    start cmd DIRECTORY1
    start cmd DIRECTORY2

Start multiple processes in one go:
    start java -jar DIRECTORY1\target\zipkin-service-1-0.0.1-SNAPSHOT.jar
    start java -jar DIRECTORY2\target\zipkin-service-2-0.0.1-SNAPSHOT.jar

Find and Kill multiple processes in one go (8081, 8082 are port numbers where server is running):
    FOR /F "tokens=5 delims= " %%P IN ('netstat -a -n -o ^| findstr :8081') DO TaskKill.exe /PID %%P
    FOR /F "tokens=5 delims= " %%P IN ('netstat -a -n -o ^| findstr :8082') DO TaskKill.exe /PID %%P

Search a string in a file or recursively in a directory in windows. For Unix, shell scripting is awesome but windows
we always curse Microsoft. But we too have command prompt too.

Below program will search a string in a directory (all files recursively). Copy the code in a file called "LogSearch.bat".
And run as below, this will give all the file names where WARNING_MESSAGE is present.

LogSearch.bat WARNING_MESSAGE D:\server_logs\

-------------------------------------------------------------
@echo off
echo 'Enter_String_To_Search Directory_Name_To_Search'
set arg1=%1
set arg2=%2
setlocal
pushd %arg2%
findstr /s /m %arg1% *
popd
endlocal
-------------------------------------------------------------