getRideOfWin7DHCP.ps1

$exitFile = [string]::Empty
$dhcpFile = [IO.File]::OpenText('C:\Temp\dhcpd.define')
while ($dhcpFile.Peek() -ge 0) {
    $dhcpLine = $dhcpFile.ReadLine()

    $namesFile = [IO.File]::OpenText('C:\Temp\hosts-glpi-win7-names-sorted.txt')
    while ($namesFile.Peek() -ge 0) {
           $namesLine = $namesFile.ReadLine()

           if($dhcpLine -Match " " + $namesLine + " ") {
                if($dhcpLine[0] -ne '#') {
                    $dhcpLine = $dhcpLine.Insert(0, '#')
                }
           }
           ElseIf($dhcpLine -Match " " + $namesLine + "$") {
            if($dhcpLine[0] -ne '#') {
                $dhcpLine = $dhcpLine.Insert(0, '#')
            }
       }
    }
    $namesFile.Dispose()
    $exitFile = $exitFile + "`n" + $dhcpLine
}
$dhcpFile.Dispose()
$exitFile | Out-File 'C:\Temp\exitDCHP.txt'