Question

如果该进程未在远程计算机上运行，我正在尝试启动该进程。问题是，如果其中一台远程计算机无法访问，脚本将停止并使用脚本的第一个“ IF”部分。

当我将一台可访问的计算机排在首位时，一切正常。当我首先放置无法访问的计算机时，脚本会启动该过程，而不会检查列表中的第二台计算机。

我以管理员身份使用批处理文件启动脚本：

powershell -Command Set-ExecutionPolicy Bypass -Force
powershell -Command "\\networkpath\bla.ps1"

脚本：

$ErrorActionPreference = 'SilentlyContinue'

$ProcessName = “processname”
$Computername = Get-Content \\networkpath\computernamen.txt |
                ForEach-Object { $_ -split ',' }

$ProcessActive = Get-Process $ProcessName -ComputerName $Computername -EV Err -EA SilentlyContinue

if ($ProcessActive -eq $null) {
    Start-Process -FilePath "\\networkpath\aktuell.bla"
} else {
    Add-Type -AssemblyName System.Windows.Forms
    [System.Windows.Forms.MessageBox]::Show("Programm gesperrt.", "Info", 0)
}

Answer 1

如果我很理解您想要在其他列出的计算机上没有运行另一个（或相同）进程的命令或进程，对吗？

在这种情况下，您可以尝试以下方法：

<#
.SYNOPSIS
    Runs a process if another or same process is not running on other computers.
.DESCRIPTION
    Search for a process (specified in -Process parameter) on computers (specified in -Computer or -List parameters).
    If not any process is found, it runs then another process (specifies in -Run parameter)
.PARAMETER Computer
    Specifies one or more computer name
    This value(s) can come from the pipeline
.PARAMETER List
    Specifies path of a file which contains a list of computer names
    The file can contain computer names one per line, or in one line separated by ',' or ';'
.PARAMETER Process
    Specifies the name of the process to check on computers
.INPUTS
    This script accept from pipeline one or more System.String representing computer names
.OUTPUTS
    None
#>


[CmdletBinding(DefaultParameterSetName='Default')]
Param (
    # Specifies one or more computer name
    [Parameter(Mandatory=$true,
               Position=0,
               ValueFromPipeline=$true,
               ValueFromPipelineByPropertyName=$true,
               ValueFromRemainingArguments=$false, 
               ParameterSetName='Default')]
    [ValidateNotNullOrEmpty()]
    [Alias("ComputerName")] 
    [string[]]
    $Computer,
    # Specifies path of a computer list file.
    [Parameter(Mandatory=$true,
               Position=0,
               ParameterSetName = 'FromFile')]
    [ValidateScript( { Test-Path $_ -PathType Leaf } )]
    [Alias("ListFile")]
    [string]
    $List,
    # Specifies the process name
    [Parameter(Mandatory=$true,
               Position=1)]
    [ValidateNotNullOrEmpty()]
    [Alias("ProcessName")]
    [String]
    $Process,
    # Specifies the process to run
    [Parameter(Mandatory = $true,
        Position = 2)]
    [ValidateNotNullOrEmpty()]
    [Alias("ProcessToRun")]
    [String]
    $Run
)
# Set default ErrorAction setting
$ErrorActionPreference = 'SilentlyContinue'
# If current Parameter Set is 'FromFile' (-List parameter was used followed by a file path)
If ($PSCmdlet.ParameterSetName -eq 'FromFile') {
    # For each line in the provided file...
    Get-Content -Path $List | ForEach-Object {
        # Test line:
        switch ($_) {
            # If any ',' is found in the line, then split each value separated by a ',' in Computer array of strings and process next line
            { $_ -match '*,*' } { [string[]]$Computer = $_.Split(',');continue }
            # If any ';' is found in the line, then split each value separated by a ';' in Computer array of strings and process next line
            { $_ -match '*;*' } { [string[]]$Computer = $_.Split(';');continue }
            # In any other case...
            Default {
                # If Computer variable does not exists, create an empty array of strings
                if (!$Computer) { [string[]]$Computer = @() }
                # Add line content as a new item of the Computer array of strings
                [string[]]$Computer += , $_
            }
        }
    }
}
# Set a flag to False
$isRunning = $false
# For each computer ($item) in Computer array...
foreach ($item in $Computer) {
    # If Get-Process command for provided Process on current computer found something, set flag to True
    if (Get-Process -Name $Process -ComputerName $item -ErrorVariable Err) { $isRunning = $true }
}
# If Flag equals True (If the searched Process was already running on any of the listed computers)...
if ($isRunning) {
    # Start process provided in -Run parameter
    Start-Process -FilePath $Run
# Else (no listed computer seems to run the searched process)
} else {
    #To display a message through dialog box
    Add-Type -AssemblyName System.Windows.Forms
    [System.Windows.Forms.MessageBox]::Show("Your message","Title", 0) | Out-Null
    #To display a message in Console
    "Your message" | Out-Host
}

将其复制并保存到PS1文件中，然后建议您键入以了解如何使用它：

Get-Help .\YourScript.ps1 -Full

我做得很快，没有花时间去测试。请让我知道它是否有效。

错误后，powershell脚本无法继续运行。 silenlycontinue已在代码中

1 个答案: