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Get-HostByAddress.ps1

#===============================================================================
# Get-HostByAddress: ホスト名からIPアドレスを取得する
#
# 使用例
#   PS > Get-HostByAddress "www.yahoo.co.jp"
#
# copyright HIRO's.NET(http://hiros-dot.net/)
#===============================================================================
[void][reflection.assembly]::LoadWithPartialName("System.Net")
function global:Get-HostByAddress
{
  Param ([string]$HostName)
  
  $hostEntry = New-Object System.Net.IPHostEntry
  $hostEntry = [System.Net.Dns]::GetHostEntry($HostName)
  
  return $hostEntry.AddressList[0].IPAddressToString
}