Powershell script to continuously ping a target host.

PingUntil.ps1

<#
    .DESCRIPTION
    Powershell script to continuously ping a target host.
    If logPath is specified, will output rolling logs based off size parameter.
    .OUTPUTS
    Set-Acl result
    .EXAMPLE
    PS> .\PingUntil.ps1 'DateTime_to_Stop' 'your_target_host' 'delayInMs' 'logPath' 'maxFileSizeInMB'
    or
    PS> .\PingUntil.ps1 (Get-Date).AddSeconds(10) 'www.google.com' 100 'C:\somedir\logs\ping.log' 100
#>
param(
  [Parameter(Mandatory=$true)][DateTime] $dtStop,
  [Parameter(Mandatory=$true)][string] $targetHost,
  [Parameter(Mandatory=$false)][int] $delayInMs = 100,
  [Parameter(Mandatory=$false)][string] $logPath = "",
  [Parameter(Mandatory=$false)][int] $maxFileSizeInMB = 300
)


Function Ping-Until {
  param(
    [Parameter(Mandatory=$true)][DateTime] $dtStop,
    [Parameter(Mandatory=$true)][string] $targetHost,
    [Parameter(Mandatory=$false)][int] $delayInMs = 100,
    [Parameter(Mandatory=$false)][string] $logPath = "",
    [Parameter(Mandatory=$false)][int] $maxFileSizeInMB = 300
  )

  [int] $KB_PER_MB = 1000
  [string] $DateTimeFormat = 'yyyyMMddTHHmm'
  
  [string] $directory = Split-Path $logPath
  if ([string]::IsNullOrWhitespace($directory))
  {
    $directory = '.'
  }
  
  [string] $fileName = [System.IO.Path]::GetFileNameWithoutExtension($logPath)
  [string] $ext = [System.IO.Path]::GetExtension($logPath) -Replace '\.', ''
  [string] $timestamp = Get-Date -Format $DateTimeFormat
  [string] $newFilePath =  "$($directory)\$($fileName)_$($timestamp)_$i.$($ext)"
  
  if ((Test-Path -Path $newFilePath) -eq $false)
  {
    New-Item $newFilePath | Out-Null
  }
   
  while((Get-Date) -lt $dtStop) 
  {
    $i = 0
    
    if ([string]::IsNullOrWhitespace($logPath))
    {
        Test-Connection $targetHost
        Start-Sleep -m $delayInMs
        continue
    }
    
    if ((Get-Item $newFilePath).Length -gt ($KB_PER_MB * $maxFileSizeInMB)) 
    {
        $i += 1
        $timestamp = Get-Date -Format $DateTimeFormat
        $newFilePath =  "$($directory)\$($fileName)_$($timestamp)_$i.$($ext)"
    }

    $output = Test-Connection $targetHost
    Write-Output $output

    Out-File -FilePath $newFilePath -InputObject $output -Append
    Start-Sleep -m $delayInMs 
  }
}

Ping-Until $dtStop $targetHost $delayInMs $logPath $maxFileSizeInMB