如何从Windows命令行Shell脚本中打开(锁定)文件?

问题描述

我一直在阅读关于检测锁定文件的信息，现在我想在自己的脚本中实现它，因此，我需要一种以编程方式检测它的方法在 Windows Shell脚本中.
公认的解决方案提供了一种使文件保持打开/锁定状态的方法:

I have been reading this thread about detecting a locked file, and now I would like to implement it in my scripts, so I will need a way to programatically detect it in Windows shell scripting.
The accepted solution gives a way to hold a file open/locked:

    (
      >&2 pause
    ) >> test.txt

但是此解决方案需要按键.
我想创建一个类似以下内容的 Windows shell脚本:

but this solution needs a key pressing.
I would like to create a Windows shell script similar, like this:

[Create and locking of c:\Temp\ProgramRunning.lck]
--------------- Rest of the Script ---------------
[Blah blah blah]
---------- End of the Main Body the Script ----------
[Unlocking and deletion of c:\Temp\ProgramRunning.lck]

因此，当脚本完成时，锁文件将被删除(当然也被解锁).如果此脚本已停止，Ctrl + C，窗口关闭，系统挂起或其他原因，则不会删除锁定文件，而是未锁定.

So, when the scripts finishes, the lock file gets deleted (and unlocked, of course). If this script gets stopped, Ctrl+C, window closed, hanging of the system or whatever, the lockfile is not deleted, but is unlocked.

我该怎么办?

推荐答案

您可以将call与输出重定向结合使用，以使文件保持打开状态，直到调用返回:

You can use call combined with output redirection to hold a file open until the call returns:

call :main 3>myopenfile.txt
goto :eof

:main
rem do whatever here
goto :eof

如果需要，您可以像这样从调用中写入文件:

If needed, you can write to the file from within the call like this:

>>&3 echo hi

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