taskkill：不同的行为控制台与脚本

Question

I am writing a small shutdown script for a java application. I get the pid and then try to do the following:

taskkill /t /pid !pid!

If I am running the command from the console (typing it by hand) everything works fine. I see the shutdown routine being executed in the java console and afterwards the java console is gone. I sometimes see the windows "process not responding. kill now or wait" dialog after a few seconds but the dialog is automatically closed when the java program stops.

If i execute a bat file with the same command I immediately see the "Process not responding..." dialog. I see the console output: "process was successfully shut down" but the java console is still open. It didn't even initiate the shutdown sequence.

edit: the complete batch script

@echo off
setlocal enabledelayedexpansion
if exist .\lock (
set /p pid=< lock
taskkill /t /pid !pid!
) 

Answer 1

On the command line !pid! will normally not expanded, as delayed expansion is disabled and can only be enabled by the registry ey or with cmd /V:on .

So at the command line !pid! will stay unchanged and in the batch it will be expanded to the content of the pid variable.

Edit As you show the correct command on the cmd line, the command in the batch must be wrong.

You should add an echo after the set/p line

Echo pid="!pid!"