Script to Add the Hostname for a URL

# Script to add the Hostname
# C:\Windows\System32\drivers\etc - Hosts has been added newly

Function Test-hostname	{
## Allows the use of -WhatIf
    [CmdletBinding(SupportsShouldProcess=$True)]

param(
    ## LogFile path for the transcript to be written to
        [Parameter(Mandatory=$false,ValueFromPipelineByPropertyName=$true,Position=0)]
        $LogFile = ("C:\xyz\LOGS\"+"Addtohosts"+'.log'),

    ## All verbose outputs will get logged in the transcript($logFile)
        [Parameter(Mandatory=$false,ValueFromPipelineByPropertyName=$true,Position=2)]
        $VerbosePreference = "Continue",

    ## All errors should be withheld from the console
        [Parameter(Mandatory=$false,ValueFromPipelineByPropertyName=$true,Position=3)]
        $ErrorActionPreference = "SilentlyContinue"
		
  ## Hostname declaration and its IP
      ,[string]$DesiredIP = "00.00.00.00"
    ,[string]$Hostname = "kamalakannansccmblog.wordpress.com"
	,[bool]$CheckHostnameOnly = $false 
	)
	
	  ## Begin the timer
        $Starters = (Get-Date) 
	
	 ## Check $VerbosePreference variable, and turns -Verbose on
        Function global:Write-Verbose ( [string]$Message ) {
            if ( $VerbosePreference -ne 'SilentlyContinue' ) {
                Write-Host "$Message" -ForegroundColor 'Green'
            }
        }

        Start-Transcript -Path $LogFile
        Write-Verbose "Start time: $starters"
        
    ## Check $VerbosePreference variable, and turns -Verbose on
        Function global:Write-Verbose ( [string]$Message ) {
            if ( $VerbosePreference -ne 'SilentlyContinue' ) {
                Write-Host "$Message" -ForegroundColor 'Green'
            }
        }
	
# Adds entry to the hosts file.
#Requires -RunAsAdministrator
$hostsFilePath = "$($Env:WinDir)\system32\Drivers\etc\hosts"
$hostsFile = Get-Content $hostsFilePath

Write-Host "About to add $desiredIP for $Hostname to hosts file" -ForegroundColor Gray

$escapedHostname = [Regex]::Escape($Hostname)
$patternToMatch = If ($CheckHostnameOnly) { ".*\s+$escapedHostname.*" } Else { ".*$DesiredIP\s+$escapedHostname.*" }
If (($hostsFile) -match $patternToMatch)  {
    Write-Host $desiredIP.PadRight(20," ") "$Hostname - not adding; already in hosts file" -ForegroundColor DarkYellow
} 
Else {
    Write-Host $desiredIP.PadRight(20," ") "$Hostname - adding to hosts file... " -ForegroundColor Yellow -NoNewline
    Add-Content -Encoding UTF8  $hostsFilePath ("$DesiredIP".PadRight(20, " ") + "$Hostname")
    Write-Host " done"
}
}
Test-hostname