PowerShell to change the display name of a field in a SharePoint List

Change-DisplayNameOfField.ps1

function Change-DisplayNameOfField()
{
    param(
        [Parameter(Mandatory=$true)][string]$url,
        [Parameter(Mandatory=$false)][System.Net.NetworkCredential]$credentials,
        [Parameter(Mandatory=$true)][string]$listName,
        [Parameter(Mandatory=$true)][string]$fieldName,
        [Parameter(Mandatory=$true)][string]$displayName
        
    )
    
    begin{
        try
        {
            #get Client Object
            $context = New-Object Microsoft.SharePoint.Client.ClientContext($url)
            $context.Credentials = $credentials

            #Retrieve List
            $list = $context.Web.Lists.GetByTitle($listName)
            $context.Load($list)
            $context.ExecuteQuery()

            
        }
        catch
        {
            Write-Host "Error while getting context. Error -->> "  + $_.Exception.Message -ForegroundColor Red
        }
    }
    process{
        try
        {
            $field = $list.Fields.GetByInternalNameOrTitle($fieldName)
            $field.Title = $displayName
            $field.Update()
            $list.Update()
            $context.Load($field)
            $context.Load($list)
            $context.ExecuteQuery()
            
            Write-Host "Display name changed successfully" -ForegroundColor Green

        }
        catch
        {
            Write-Host ("Error while changing display name for a Field. Error -->> " + $_.Exception.Message) -ForegroundColor Red
        }
    }
    end{
        $context.Dispose()
    }

    
}