检查文件是否存在并在 PowerShell 中运行批处理文件? [英] Check if file exist and run a batch file in PowerShell?

问题描述

这可能是一个简单的问题，但我是 PowerShell 的新手，找不到解决方法.基本上，如果指定的文件不存在，我必须运行 .BAT 文件.文件名在文件夹中的格式类似于mmddyyy.dat"，其中 mmddyyyy 是今天的月、日(如果 <10 则为 0 前缀)和年.伪代码将是这样的:

This may be a simple question, but I am new to PowerShell and could not find a way to do it. Basically, I have to run a .BAT file if a specified file does not exist. The file name is in a patten like "mmddyyy.dat" in a folder, where mmddyyyy is today's month, day(0 prefix if < 10) and year. Pseudo codes would be something like this:

 $File = "C:\temp\*mmddyyyy*.dat" # how to parse Get-Date mmddyyyy and build this pattern?
 #if $File exist # check any file exist?
     .\myBatch.bat  # run the bat file, can I run it in hidden mode?

推荐答案

我建议创建一个可重用的函数，如下所示:

I'd recommend making a reusable function like the following:

function GetDateFileName
{   
    $date = Get-Date
    $dateFileName = "$(get-date -f MMddyyyy).dat"
    return $dateFileName
}
$fileName = GetDateFileName
$filePath = "c:\temp\" + $fileName

if([IO.File]::Exists($filePath) -ne $true)
{
    #do whatever
}

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