SharePoint Online: Get All Terms from a Term Set using Powershell

Requirement: PowerShell to Get All Terms from a Term Set in SharePoint Online

SharePoint Online: Get Terms from a Term Set using PowerShell

#Load SharePoint CSOM Assemblies
Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.dll"
Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.Runtime.dll"
Add-Type -Path "C:\Program Files\Common Files\microsoft shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.Taxonomy.dll" 

#Function to recursively get all child terms from a Term
Function Get-SPOTerm([Microsoft.SharePoint.Client.Taxonomy.Term]$Term)
{
    Write-host $Term.Name
    #Get All child terms
    $ChildTerms = $Term.Terms
    $Ctx.Load($ChildTerms)
    $Ctx.ExecuteQuery()

    #Process all child terms
    Foreach ($ChildTerm in $ChildTerms)
    {
        $Indent = $Indent +"`t"
        Write-host $Indent -NoNewline
        Get-SPOTerm($ChildTerm)
    }
    $Indent = "`t"
}

#Parameters
$AdminCenterURL = "https://crescenttech-admin.sharepoint.com"
$TermGroupName="Deals Pipeline"
$TermsetName="Dealstage"

#Get Credentials to connect
$Cred= Get-Credential
 
#Setup the context
$Ctx = New-Object Microsoft.SharePoint.Client.ClientContext($AdminCenterURL)
$Ctx.Credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($Cred.Username, $Cred.Password)

#Get the taxonomy session and termstore
$TaxonomySession = [Microsoft.SharePoint.Client.Taxonomy.TaxonomySession]::GetTaxonomySession($Ctx)
$TermStore =$TaxonomySession.GetDefaultSiteCollectionTermStore()
$Ctx.Load($TaxonomySession)
$Ctx.Load($TermStore)
 
#Get the Term Group    
$TermGroup = $TermStore.Groups.GetByName($TermGroupName)
$Ctx.Load($TermGroup)
 
#Get the termset
$TermSet = $TermGroup.TermSets.GetByName($TermSetName)
$Ctx.Load($TermSet)
$Ctx.ExecuteQuery()

#Get all terms
$TermColl=$TermSet.Terms
$Ctx.Load($TermColl)
$Ctx.ExecuteQuery()

# Loop through all the terms
Foreach($Term in $TermColl)
{
    #Get the terms recursively
    Get-SPOTerm($Term)
}

PnP PowerShell to Get All Terms from a Term Set in SharePoint Online:

#Config Variables
$AdminCenterURL = "https://crescenttech-admin.sharepoint.com"

#Connect to PnP Online
Connect-PnPOnline -Url $AdminCenterURL -Credentials (Get-Credential)

#Get All Terms from a Term Set
Get-PnPTerm -TermSet "DealStage" -TermGroup "Deals Pipeline" 

result:

The Get-PnPTerm also supports -IncludeChildTerms -Recursive parameters!