Removes record from host file

Remove-RecordFromHosts.ps1

# credit Tom Chantler: https://github.com/TomChantler/EditHosts
function Remove-RecordFromHosts
{
    [cmdletbinding()]
    param(
        [Parameter(Mandatory = $true, Position = 0)]
        [string] $Hostname
    )

    begin
    {
        $ErrorActionPreference = 'Stop'

        if (! ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator"))
        {
            Write-Warning "Function requires elevation."
            Break
        }

        $hostsFilePath = "$($env:WinDir)\system32\Drivers\etc\hosts"

        $hostsFile = Get-Content $hostsFilePath

        Write-Verbose "About to remove $Hostname from hosts file"
    }
    process
    {
        $escapedHostname = [Regex]::Escape($Hostname)
        if (($hostsFile) -match ".*\s+$escapedHostname.*")
        {
            Write-Verbose "$Hostname - removing from hosts file... "

            $hostsFile -notmatch ".*\s+$escapedHostname.*" | Out-File $hostsFilePath

            Write-Host "Done."
        }
        else
        {
            Write-Host "$Hostname - not in hosts file (perhaps already removed); nothing to do"
        }
    }
}
#Remove-RecordFromHosts www.google.com