Powershell中的变量-将变量添加到脚本

Question

I am looking to write a script in PowerShell, however I want to set a variable and then have it fill the variable value in my script. To be more specific the variable I want to set is an IP address and I want to enter it into a script that pulls 3 files for me, as I manage a large number of computers. Here is an example of one file from the script that I want run:

Copy-Item -Path '\\VariableIwantToEnterIPaddress\C$\ComputerZ\log\File.log' -Destination C:\Users\JayZ\Desktop

Where I put VariableIwantToEnterIPaddress I would place a variable then have it fill as an IP address. Either setting the variable first then running the script. Or having PowerShell prompt me for a value then it run the script.

Is this possible, or is there a better method of doing this?

Answer 1

This should do the trick

$IPs = '10.10.0.1','10.10.0.2','10.10.0.3' #Enter your IP addresses here
foreach ($ip in $IPs) {
    Copy-Item "\\$($ip)\C$\ComputerZ\log\File.log" -Destination C:\Users\JayZ\Desktop
}

Edit: This should make it easier to enter in IP addresses, as many as you would like

function Copy-Files {
    [CmdletBinding()]
    param (
    [Parameter(Mandatory=$true,ValueFromPipeline)]
        [string]$ip
    )        
    process {
        Copy-Item "\\$($ip)\C$\ComputerZ\log\File.log" -Destination C:\Users\JayZ\Desktop
    }
}

Usage:

'10.10.0.1','10.10.0.2','10.10.0.3' | Copy-Files

Answer 2

The simplest way, in my opinion, is to use the Read-Host cmdlet. Basically:

$ipaddr = Read-Host -Prompt 'IP:'
Copy-Item "\\$ipaddr\C$\ComputerZ\log\File.log" -Destination C:\Users\JayZ\Desktop

By using Read-Host and the string .Split, you could loop through several IPs like this:

$ipaddr = Read-Host -Prompt 'IP List:'
$iplist = ipaddr.Split(" ")
foreach ($ip in $iplist) {
    Copy-Item "\\$ip\C$\ComputerZ\log\File.log" -Destination C:\Users\JayZ\Desktop
}

Then you just type in the IP addresses with a space between them when you run the script.

Answer 3

Use script parameters.

MyScript.ps1

[CmdletBinding()]
Param(
    [Parameter(Mandatory = $True, Position = 0)]
    [Alias('CN','IP')]
    [System.String[]]
    $ComputerName
)
ForEach ($CN in $ComputerName)
{
    Copy-Item -Path "\\$CN\C$\ComputerZ\log\File.log" -Destination C:\Users\JayZ\Desktop
}

The [Parameter()] attribute I've included forces the user to enter a CN/IP if omitted and allows you to not use named-parameters:

PS C:\> MyScript.ps1 127.0.0.1

or

PS C:\> MyScript.ps1 -ComputerName 127.0.0.1

When you omit:

PS C:\> MyScript.ps1

cmdlet MyScript at command pipeline position 1
Supply values for the following parameters:
ComputerName: _

And lastly, to run against multiple PCs, use a comma-separated list:

PS C:\> MyScript.ps1 127.0.0.1, 168.5.3.2