使用IF语句Powershell检查多个目录中的文件 [英] Check for File in multiple directories with an IF statement Powershell

问题描述

我在力量上面临一些问题。我想要能够让一个powershell命令搜索多个目录。
名称是一个变量，如$ VM_DISK = VM_DISK.vhdx，并且让该PowerShell在该庄园中进行搜索，以便如果该文件存在于C：\VM_DISK\等文件夹中，则会退出该脚本。
我已经尝试过Get-Childitem，但是当我把变量放在它当中似乎不起作用。这是一个例子：

  $ VM_DISK =Example.vhdx
 
 $ search = Get- ChildItem -Path C：\VM_DISK\ * -Filter $ VM_DISK -Recurse 
 
 if（$ search -eq $ VM_DISK）{write-host再见！ exit} else {write-hostContinue} 
  

我似乎无法弄清楚为什么这是

解决方案

你需要修改你的 code>语句。

  if（$ search.Name -contains $ VM_Disk）
  

这样你就可以将名称数组（这是你想要的，对象的名称，而不是对象）与特定对象的名称进行比较（基本上是一个字符串）。

这在你的情况下没有什么意义，tbh。由于 $ search 将始终包含 $ VM_Disk ，或者如果没有找到内容将为null。





所以如果（$ search）（就像Mathias建议），正确的测试方法是。这将测试是否有任何回报。哪个，基本上等于你想要做的。

I am facing some problems in powershell. I want to be able to let a powershell command search for multiple directories. With the name being a variable like "$VM_DISK=VM_DISK.vhdx" and let powershell search in that manor so that if that file exists in a folder such as C:\VM_DISK\ it exit the script. I have already tried the "Get-Childitem" but it doesn't seem to work when I put my variable in it. Here is an example:

    $VM_DISK= "Example.vhdx"

    $search=Get-ChildItem -Path C:\VM_DISK\* -Filter $VM_DISK -Recurse 

    if ($search -eq $VM_DISK) {write-host "Goodbye!" exit}  else {write-host "Continue"}

I just cant seem to figure out why this isn't working, hope some can figure it out.

解决方案

You need to alter your if statement.

if ($search.Name -contains $VM_Disk)

This way you are comparing an Array of names (which is what you want, names of objects, not objects) to a name of particular object (to a string, basically).
This makes little sense in your case, tbh. Since $search would always include $VM_Disk or would be null if nothing was found.

So the proper way to test would be if ($search) (just like Mathias advised). Which would test if anything was returned. Which, basically equals what you are trying to do.

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