rename all groups in an OU, replacing a specific string

renamegroupsin-ou.ps1

function renamegroupsin-ou{
  [cmdletbinding()]
  param (
    $targetou,
    $findpattern,
    $replacepattern
  )

  $groups = get-adobject -searchbase $targetou -ldapfilter “objectClass=group” -properties samaccountname, cn

  foreach ($group in $groups) {
    #perform string replace

    $oldadgroupcn = $group.cn
    $oldsamgroupname = $group. samaccountname
    $newadgroupcn = $oldadgroupcn -replace “$findpattern”, “$replacepattern”
    $newsamgroupname = $oldsamgroupname -replace “$findpattern”, “$replacepattern”
    try {
      set-adobject -identity $($group. distinguishedname) -replace @{ samaccountname=”$newsamgroupname” } rename-adobject -identity $($group. distinguishedname) -newname “$newadgroupcn”
    } catch {
      write-host “set action failed: $($group.distinguishedname)”
      $_. exception
    }

  }
}

function main {
  renamegroupsin-ou -targetou “OU=Server2,OU=contosoNYC,DC=contoso,DC=com” -findpattern ““ -replacepattern “-“
}