Powershell snippets

Powershell Snippets

Get A/CNAME DNS Records from Windows DNS

get-dnsRecords.ps1

$ErrorActionPreference = "Stop"

if ($args.Count -lt 1) {
    Write-Host "Usage:   get-dnsRecords.ps1 <zone name/domain>"
    Write-Host "Example: get-dnsRecords.ps1 example.com"
    exit 1
}

$zoneName = $args[0]

# write-host "$zoneName"
# exit

$rsp = Invoke-Command -ComputerName my-dns-host -ScriptBlock {
  param($zoneName)
  $dnsRecords = Get-DnsServerResourceRecord -ZoneName $zoneName -RRType A
  foreach ($record in $dnsRecords) {
    Write-Output "$($record.HostName).$zoneName"
  }
  $dnsRecords = Get-DnsServerResourceRecord -ZoneName $zoneName -RRType CName
  foreach ($record in $dnsRecords) {
    Write-Output "$($record.HostName).$zoneName"
  }
} -ArgumentList $zoneName
write-output "$rsp" | Out-File -FilePath ".\$($zoneName).records"
write-host "Records are in in file .\$($zoneName).records"