Install Azure DevOps Deployment Agent (off-line)

InstallDeploymentAgent.ps1

param (
    [string]
    $AgentZip = 'agent.zip',

    [string]
    $AgentDirectory = "$($env:SystemDrive\Agent)",

    [Parameter(Mandatory=$true)]
    [string]
    $DeploymentPoolName,

    [string]
    $AgentName = $env:COMPUTERNAME,

    [string]
    $WorkFolder = '_work',

    [Parameter(Mandatory=$true)]
    [string]
    $OrganizationUrl,

    [Parameter(Mandatory=$true)]
    [string]
    $PersonalAccessToken
)

Function Test-IsAdmin {
    $identity = [Security.Principal.WindowsIdentity]::GetCurrent()
    $principal = New-Object Security.Principal.WindowsPrincipal $identity
    $principal.IsInRole([Security.Principal.WindowsBuiltinRole]::Administrator)
}

If (-not (Test-IsAdmin)) { 
    throw "Run command in an administrator PowerShell prompt"
}
    
If ($PSVersionTable.PSVersion -lt ([version]"3.0"))
{ 
    throw "The minimum version of Windows PowerShell that is required by the script (3.0) does not match the currently running version of Windows PowerShell ($($PSVersionTable.PSVersion))"
}

If (-not (Test-Path $AgentDirectory))
{ 
    New-Item $AgentDirectory -ItemType Directory | Out-Null
}

Try
{
    Push-Location $AgentDirectory

    for ($i = 1; $i -lt 100; $i++)
    { 
        $destFolder = (Join-Path $AgentDirectory "A$i")
        
        if(Test-Path $destFolder)
        {
            continue
        }

        New-Item $destFolder -ItemType Directory | Out-Null
        
        Push-Location $destFolder
    } 
    
    Add-Type -AssemblyName System.IO.Compression.FileSystem
    [System.IO.Compression.ZipFile]::ExtractToDirectory( $AgentZip, "$PWD")
    
    .\config.cmd --deploymentpool --deploymentpoolname $DeploymentPoolName --agent $AgentName --runasservice --work $WorkFolder --url $OrganizationUrl --auth PAT --token $PersonalAccessToken
    
    Pop-Location
}
finally
{
    Pop-Location
}