Checking Site Column Names for Usage within a Site Collection

Checking Site Column Names for Usage within a Site Collection

if((Get-PSSnapin | Where {$_.Name -eq "Microsoft.SharePoint.PowerShell"}) -eq $null) { 

  Add-PSSnapin Microsoft.SharePoint.PowerShell 

} 

$site = Get-SPSite("http://siteURL/")  

$str = "ContentNavigation" 

foreach($web in $site.AllWebs)  { 

  foreach($list in $web.Lists)  {   

    foreach ($field in $list.Fields) { 

      if($field.InternalName.Contains($str) -or $field.Title.Contains($str))  {  

        Write-Host "'$web' web - Found a match in the '$field' field in the '$list' list"  

      } 

    } 

  } 

} 

$site.dispose();