How do you wait on a Task Scheduler task to finish in a batch file or C#?

Question

I am trying to write a batch file that does two things:

1. First it launches an installer (install.exe) which installs a program (program.exe).
2. Second it

Answer 1

You can also get rid of the hacky ping -n command by using timeout.

Here's the answer of MC ND with timeout. The 1 in the sample stands for 1 second.

:loop
for /f "tokens=2 delims=: " %%f in ('schtasks /query /tn yourTaskName /fo list ^| find "Status:"' ) do (
    if "%%f"=="Running" (
        timeout /T 1 /NOBREAK > nul
        goto loop
    )
)

Answer 2

thank you! confirmed working on windows 10 cmd file. very useful way to create multiple aysnc tasks and sync them back up. For example, chkdsk multiple drives in parallel and wait for all jobs to finish:

C:\Windows\System32\schtasks.exe /RUN /TN "chkdsk_G"
C:\Windows\System32\schtasks.exe /RUN /TN "chkdsk_H"

:loop

for /f "tokens=2 delims=: " %%f in ('schtasks /query /tn chkdsk_G /fo list ^| find "Status:"' ) do (
    if "%%f"=="Running" (
        ping -n 60 localhost >nul 2>nul
        goto loop
    )
)

for /f "tokens=2 delims=: " %%f in ('schtasks /query /tn chkdsk_H /fo list ^| find "Status:"' ) do (
    if "%%f"=="Running" (
        ping -n 60 localhost >nul 2>nul
        goto loop
    )
)

:both jobs are now complete

Answer 3

From batch file, query the task status, and if it is running, keep querying

:loop
for /f "tokens=2 delims=: " %%f in ('schtasks /query /tn yourTaskName /fo list ^| find "Status:"' ) do (
    if "%%f"=="Running" (
        ping -n 6 localhost >nul 2>nul
        goto loop
    )
)