How to set the SharePoint 2010 Enterprise Search Service Application "Default Content Access Account" by using PowerShell

If you want to set the SharePoint 2010 Enterprise Search Service Application “Default Content Access Account” by using PowerShell you can use this script:

$searchapp = Get-SPEnterpriseSearchServiceApplication “Search Service Application”
$c= New-Object Microsoft.Office.Server.Search.Administration.Content($searchapp)
$c.SetDefaultGatheringAccount($crawlUser, (ConvertTo-SecureString $crawlPwd -AsPlainText -force))

($crawlUser is - of cause - the login of the account and $crawlPwd is the password in plain text)