###################################################
# Add List of Computers to a List of AD Groups
# Script by Sean Huggans
# Date: 2017.04.09
###################################################
$GroupList = "C:\Temp\GroupList.txt"
$ComputerList = "C:\Temp\PCList.txt"
 
ForEach ($ADGroup in $(Get-Content $GroupList)) {
 echo "======================"
 echo "=  $ADGroup"
 echo "======================"
 ForEach ($ADComputer in $(Get-Content $ComputerList)) {
  Try {
   Add-ADGroupMember -Identity "$($(Get-ADGroup "$ADGroup").DistinguishedName)" -Members "$($(Get-ADComputer $ADComputer).DistinguishedName)" -Confirm:$false
   echo "$ADComputer"
  } catch {
   echo "Error.  Verify Computer and Group Names."
  } finally {
  }
 }
}