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Function Log-Start{
  <#
  .SYNOPSIS
    Creates log file

  .DESCRIPTION
    Creates log file with path and name that is passed. Checks if log file exists, and if it does deletes it and creates a new one.
    Once created, writes initial logging data

  .PARAMETER LogPath

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<#
.Synopsis

   Performance test for output suppression in PowerShell
.DESCRIPTION

   Very basic performance test against different types of output suppression in PowerShell
   Increase the value of the Iterations parameter to observe how performance impacts the different methods

   

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New-IseSnippet -Title '@Calculated Property, Named' -Description "Named calculated property template" -Text '@{ Name = ""; Expression = { } }' -CaretOffset 11
New-IseSnippet -Title '@Calculated Property, Anonymous' -Description "Calculated property template, without a name (For use with Sort-Object and Group-Object)" -Text '@{ Expression = {  } }' -CaretOffset 18

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function Reverse-String {
  param(
    [string]$instr
  )

  $chars = $instr.ToCharArray()

  [array]::Reverse($chars)
  $chars -join ""
}

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function New-JunkFile
{
<#
.SYNOPSIS
    Generates a file of a specified length, filled with random bytes

.DESCRIPTION
    Generates a file of a specified length, filled with random bytes
    Uses the RNGCryptoServiceProvider to randomly select each byte

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#
# Ping-Forever.ps1
#
# Modified version of alexinnes/ConstantPingToServer.ps1 (https://gist.github.com/alexinnes/b2076c88700020af3963)
#
[CmdletBinding()]
param(
    [Parameter(Mandatory=$true)]
    [string]$ComputerName,
    [string]$LogDirectory = 'C:\ping logs\'

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function Parse-SimpleFilter {
    param([string]$Filter)

    $err = @() # TODO inspect parsing errors
    $Tokens = [System.Management.Automation.PSParser]::Tokenize($Filter,[ref]$err)

    $Elements = foreach($t in $Tokens){
        switch($t.Type){
            ([System.Management.Automation.PSTokenType]::Command) {
                '$_.{0}' -f $t.Content

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function ?? {
  $args |Select-Object -First 1
}

# Use like:
# $Name = ?? (Get-ADUser $_ | Select-Object -Expand Name) "John Doe"
#
# supports as many fallthroughs as you like (like chained ?? in C#)
# $Something =?? $null $null $null 1
# ($Something -eq 1) is now the case

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function Measure-Lines {
  param($Path = 'C:\log.txt')
  
  $FileStream = New-Object IO.FileStream ($Path,[System.IO.FileMode]::Open,[System.IO.FileAccess]::Read,[System.IO.FileShare]::ReadWrite)
  $StreamReader = New-Object System.IO.StreamReader $FileStream 
  $TotalLines = 0
  while($StreamReader.ReadLine() -ne $null){
    $TotalLines++
  }
  $TotalLines

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# Most straighforward way I can think of
# 2 pairs of curly braces and a single semicolon for the calculated OSVERSION property

Import-Csv .\input.csv |Select-Object -Property MACHINENAME,@{Label='OSVERSION';Expression={(Get-WmiObject Win32_OperatingSystem -ComputerName $_.MACHINENAME).Caption}} | Export-Csv .\output.csv -NoTypeInformation