Change the "SharePoint" text in the top left corner in SharePoint 2013

Add-PSSnapin Microsoft.SharePOint.PowerShell

#Get the Web Application

# Enter the URL of the site you wish to update

$webappurl = "http://mysites2013"

$webApp = Get-SPWebApplication $webappurl

# Enter the HTML/Link for the text

$html = '

https://Portal2013.com">Employee Portal

'

$webApp.SuiteBarBrandingElementHtml = $html

# Update SharePoint

$webApp.Update()