Waiting for Parallel batch scripts or command lines

Question

I am finding it difficult to modify the script here to suit my requirements: https://stackoverflow.com/a/12665498/4683898

@echo off
setlocal
set \"lock=%temp         


        

Answer 1

just to offer an alternative way:

@ECHO off
start "MyCommand-%~n0" cmd.exe /c ping localhost
start "MyCommand-%~n0" cmd.exe /c ipconfig /all
start "MyCommand-%~n0" cmd.exe /c sysinfo
:loop
tasklist /fi "windowtitle eq MyCommand-%~n0"  | find "===" >nul && goto :loop
echo finished!

Edit for your comment. bunch is the number of commands running in parallel.

@ECHO off
setlocal enabledelayedexpansion
set bunch=3

for /f "delims=:" %%a in ('findstr /n /b "REM ==" %~f0') do set /a datastart=%%a+1
set count=0
for /f "skip=%datastart% usebackq delims=" %%a in ("%~f0") do (
  set /a "count=(count+1) %% %bunch%"
  echo starting: %%a
  start "MyCommand-%~n0" cmd.exe /c %%a
  if !count!==0 echo waiting & call :loop
)
echo waiting & call :loop
echo finished!
goto :eof

:loop
tasklist /fi "windowtitle eq MyCommand-%~n0"  | find "===" >nul && goto :loop
goto :eof

REM == START DATA ==
ping localhost
ipconfig /all
systeminfo
tasklist
echo hello
schtasks /query
wmic bios get /value
timeout 10

the first for just gets the line number where your commands are (start of DATA section)

Answer 2

You can call the files easily with this script:

@echo off
setlocal
set "lock=%temp%\wait%random%.lock"


call :a one.bat 1
call :a two.bat 2
call :wait
call :a three.bat 1
call :a name.bat 2
call :a gfwagwa.bat 3


exit /b
:a
start "%~2" cmd /c 9>"%lock%%2" %1
exit /b
:wait
1>nul 2>nul ping /n 2 ::1
for %%N in (%lock%*) do (
  ( rem
  ) 9>"%%N" || goto :Wait
) 2>nul

call :wait simply replaces the waiting. Whenever you have called all files that are to be run asynchronously, call the wait function. Then you can call more scripts.

The second parameter is the number of the lock file. Make sure you don't have duplicate numbers before all those scripts using them are closed (i.e. before the next call :wait). Though you're not going to run out of numbers anyway, no reason to use duplicates.