SharePoint 2013: PowerShell to Create a Folder in Document Library

How to add folder in SharePoint Document Library using PowerShell:
To create folder in document library in SharePoint 2013, use this PowerShell script:

$folder = $list.Folders.Add("", [Microsoft.SharePoint.SPFileSystemObjectType]::Folder, "New")
$folder.Update()

The above codes doesn't provide much fault tolerance, isn't it?

• What if the particular library we are looking for doesn't exists?
• What if the folder we are trying to add already exists on the library?

Error! So lets re-write the code in PowerShell with little fault tolerance!

How to Create Folders and Sub-Folders in SharePoint List using PowerShell?

Here is the PowerShell code snippet for creating Folders and Sub-Folders inside SharePoint List or Library:

Add-PSSnapin Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue
 
#Get the Web
$web=Get-SPWeb "http://sharepoint.company.com"
#Get the List/Library
$list=$web.Lists.TryGetList("SalesList")

if($list)  #Check If List exists!
 {
  # Create a Folder "Sales Documents"
  # Check Folder Doesn't exists in the Library!
  $folder = $list.ParentWeb.GetFolder($list.RootFolder.Url + "/" +"Sales List");
  #sharepoint powershell check if folder exists
  if ($folder.Exists -eq $false)
   {
    #Create a Folder
    $folder = $list.AddItem("", [Microsoft.SharePoint.SPFileSystemObjectType]::Folder, "Sales Sub-Item")
    $folder.Update();
   }
   
  #Create a Sub-Folder "APAC Sales Documents" inside "Sales Documents"
  #Check if sub-folder doesn't exists already
  $Subfolder = $list.ParentWeb.GetFolder($folder.URL + "/" + "APAC Sales Documents");
  if ($Subfolder.Exists -eq $false)
   {
    #Create a Sub-Folder Inside "Sales Documents"
    $Subfolder = $list.AddItem($folder.URL, [Microsoft.SharePoint.SPFileSystemObjectType]::Folder, "APAC Sales Documents")
    $Subfolder.Update();
   }
 }

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