Get access token from KuDu shell

get_access_token_from_kudu.ps1

#User Assigned Managed Identity
$ProgressPreference = "SilentlyContinue"
$clientId = 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx'
$headers=@{"X-IDENTITY-HEADER"=$env:IDENTITY_HEADER}
$resourceUri = ‘https://management.azure.com/'
$uri = "$($env:IDENTITY_ENDPOINT)?api-version=2019-08-01&client_id=$clientId&resource=$resourceUri"
$response = Invoke-WebRequest -UseBasicParsing -Uri $uri -Headers $headers
$content = $response.Content | ConvertFrom-Json
$content.access_token

#System Assigned Managed Identity
$ProgressPreference = "SilentlyContinue"
$headers=@{"X-IDENTITY-HEADER"=$env:IDENTITY_HEADER} 
$resourceUri = 'https://management.azure.com/'
$uri = "$($env:IDENTITY_ENDPOINT)?api-version=2019-08-01&resource=$resourceUri"
$response = Invoke-WebRequest -UseBasicParsing -Uri $uri -Headers $headers 
$content = $response.Content | ConvertFrom-Json
$content.access_token