Export/Import Term Set in SharePoint 2013 - powershell

Question

For navigation purpose, we use Term sets.
I need to create a PowerShell to get term sets with URLs from specific term groups.
Here is my script
Set-ExecutionPolicy -Scope CurrentUser Unrestricted
#Specify admin user and SharePoint site URL
##update login
$User = "corporate\spuser"
##update siteUrl
$Site = "http://sp13"
#Adding references to SharePoint client assemblies
Add-Type -Path "c:\Program Files\Common Files\microsoft shared\Web Server Extensions\15\ISAPI\Microsoft.SharePoint.Client.dll"
Add-Type -Path "c:\Program Files\Common Files\microsoft shared\Web Server Extensions\15\ISAPI\Microsoft.SharePoint.Client.Runtime.dll"
Add-Type -Path "c:\Program Files\Common Files\microsoft shared\Web Server Extensions\15\ISAPI\Microsoft.SharePoint.Client.Taxonomy.dll"
$Pwd = "xvcx23423"
$GroupName = "India"
$TermSetName ="India_Global"
#Recursive function to get terms
function GetTerms([Microsoft.SharePoint.Client.Taxonomy.Term] $Term,[String]$ParentTerm,[int] $Level)
{
$Terms = $Term.Terms;
$Context.Load($Terms)
$Context.ExecuteQuery();
if($ParentTerm)
{
$ParentTerm = $ParentTerm + "," + $Term.Name;
}
else
{
$ParentTerm = $Term.Name;
}
Foreach ($SubTerm in $Terms)
{
$Level = $Level + 1;
#up to 7 terms levels are written
$NumofCommas = 7 - $Level;
$commas ="";
For ($i=0; $i -lt $NumofCommas; $i++)
{
$commas = $commas + ",";
}
$file.Writeline("," + "," + "," + "," + $Term.Description + "," + $ParentTerm + "," + $SubTerm.Name + $commas );
GetTerms -Term $SubTerm -ParentTerm $ParentTerm -Level $Level;
}
}
$Context = New-Object Microsoft.SharePoint.Client.ClientContext($Site)
$Credentials = New-Object System.Net.NetworkCredential($User,$Pwd);
$Context.Credentials = $Credentials
$MMS = [Microsoft.SharePoint.Client.Taxonomy.TaxonomySession]::GetTaxonomySession($Context)
$Context.Load($MMS)
$Context.ExecuteQuery()
#Get Term Stores
$TermStores = $MMS.TermStores
$Context.Load($TermStores)
$Context.ExecuteQuery()
$TermStore = $TermStores[0]
$Context.Load($TermStore)
$Context.ExecuteQuery()
#Get Groups
$Group = $TermStore.Groups.GetByName($GroupName)
$Context.Load($Group)
$Context.ExecuteQuery()
#Bind to Term Set
$TermSet = $Group.TermSets.GetByName($TermSetName)
$Context.Load($TermSet)
$Context.ExecuteQuery()
#Create the file and add headings
$OutputFile = "Output File Path1.csv"
$file = New-Object System.IO.StreamWriter($OutputFile)
$file.Writeline("Term Set Name,Term Set Description,LCID,Available for Tagging,Term Description,Level 1 Term,Level 2 Term,Level 3 Term,Level 4 Term,Level 5 Term,Level 6 Term,Level 7 Term");
$Terms = $TermSet.Terms
$Context.Load($Terms);
$Context.ExecuteQuery();
$lineNum = 1;
Foreach ($Term in $Terms)
{
if($lineNum -eq 1)
{
##output term properties on first line only
$file.Writeline($TermSet.Name + "," + $TermSet.Description + "," + $TermStore.DefaultLanguage + "," + $TermSet.IsAvailableForTagging + "," + $Term.Description + "," + $Term.Name + "," + "," + "," + "," + "," + "," );
}
else
{
$file.Writeline("," + "," + "," + "," + $Term.Description + "," + $Term.Name + "," + "," + "," + "," + "," + "," );
}
$lineNum = $lineNum + 1;
$TermTreeLevel = 1;
GetTerms -Term $Term -Level $TermTreeLevel -ParentTerm "";
}
$file.Flush();
$file.Close();
Any idea how to get the URLs of the term set.
Is there any better approach to export/import term set of a specific group.

Answer 1

You can get the term set friendly URL using TaxonomySession:
SPSite site = SPSite.Current.Site;
TaxonomySession servis = new TaxonomySession(site);
siteNavigationStore = servis.DefaultSiteCollectionTermStore;
siteNavigationGroup = sitenavigationstore.GetSiteCollectionGroup(site);
siteNavigationSet = sitenavigationgrup.TermSets["Term Set Name"];
NavigationTerm navigatedTerm = NavigationTerm.GetAsResolvedByWeb(navigationterm, site.RootWeb, StandardNavigationProviderNames.GlobalNavigationTaxonomyProvider);
navigatedTerm.GetWebRelativeFriendlyUrl();
GetWebRelativeFriendlyUrl return your friendly url