Powershell脚本，用于检查远程计算机列表中是否存在文件

I'm new at Powershell, and I'm trying to write a script that checks if a file exists; if it does, it checks if a process is running. I know there are much better ways to write this, but can anyone please give me an idea? Here's what I have:

我是Powershell的新手，我正在尝试编写一个检查文件是否存在的脚本;如果是，则检查进程是否正在运行。我知道有更好的方法可以写这个，但任何人都可以给我一个想法吗？这就是我所拥有的：

Get-Content C:\temp\SvcHosts\MaquinasEstag.txt | `
   Select-Object @{Name='ComputerName';Expression={$_}},@{Name='SvcHosts Installed';Expression={ Test-Path "\\$_\c$\Windows\svchosts"}} 

   if(Test-Path "\\$_\c$\Windows\svchosts" eq "True")
   {
        Get-Content C:\temp\SvcHosts\MaquinasEstag.txt | `
        Select-Object @{Name='ComputerName';Expression={$_}},@{Name='SvcHosts Running';Expression={ Get-Process svchosts}} 
   }

The first part (check if the file exists, runs with no problem. But I have an exception when checking if the process is running:

第一部分（检查文件是否存在，运行没有问题。但是在检查进程是否正在运行时我有一个例外：

Test-Path : A positional parameter cannot be found that accepts argument 'eq'.
At C:\temp\SvcHosts\TestPath Remote Computer.ps1:4 char:7
+    if(Test-Path "\\$_\c$\Windows\svchosts" eq "True")
+       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidArgument: (:) [Test-Path], ParameterBindingException
    + FullyQualifiedErrorId : PositionalParameterNotFound,Microsoft.PowerShell.Commands.TestPathCommand

Any help would be appreciated!

任何帮助，将不胜感激！

1 个解决方案

#1

The equality comparison operator is -eq, not eq. The boolean value "true" in PowerShell is $true. And if you want to compare the result of Test-Path to something the way you do, you must run the cmdlet in a subexpression, otherwise -eq "True" would be treated as an additional option eq with the argument "True" to the cmdlet.

等式比较运算符是-eq，而不是eq。 PowerShell中的布尔值“true”为$ true。如果要将Test-Path的结果与您的方式进行比较，则必须在子表达式中运行cmdlet，否则-eq“True”将被视为附加选项eq，其参数为“True”小命令。

Change this:

改变这个：

if(Test-Path "\\$_\c$\Windows\svchosts" eq "True")

into this:

进入这个：

if ( (Test-Path "\\$_\c$\Windows\svchosts") -eq $true )

Or (better yet), since Test-Path already returns a boolean value, simply do this:

或者（更好），因为Test-Path已经返回一个布尔值，只需执行以下操作：

if (Test-Path "\\$_\c$\Windows\svchosts")

#1