Add New Content Source in SharePoint 2013 Search using PowerShell

Requirement: Create new search content source in SharePoint 2013.

PowerShell script to add new content source:
Here is the PowerShell script to create new content source in SharePoint 2013 search.

Add-PSSnapin Microsoft.SharePoint.Powershell -ErrorAction SilentlyContinue

#Variables for new content source creation
$ContentSourceName= "Intranet Portal" #default "Local SharePoint sites"
$ContentSourceType="SharePoint"
$ContnetSourceURL="http://portal.crescent.com"

#Get the search service application
$SSA = Get-SPEnterpriseSearchServiceApplication #-Identity "Search Service Application Name"

#Check if the given content source Name exits already
$ContentSource = Get-SPEnterpriseSearchCrawlContentSource -SearchApplication $SSA | where {$_.Name -eq $ContentSourceName}
if ($ContentSource)
{
    write-host "Content Source Name already exist!" -f Red
    exit
}

#Create new content source
$ContentSource = New-SPEnterpriseSearchCrawlContentSource -SearchApplication $SSA -Type $ContentSourceType `
          -name $ContentSourceName -StartAddresses $ContnetSourceURL -MaxSiteEnumerationDepth 0

write-host "New Content Source has been created!" -f Green

#To delete a content source, use: 
#Remove-SPEnterpriseSearchCrawlContentSource -SearchApplication $SSA -Identity $ContentSourceNames

New-SPEnterpriseSearchCrawlContentSource reference in technet.