Merge pull request #206772 from Lukeout/patch-24

Update diagnostics-linux.md

Author: PRMerger7

articles/virtual-machines/extensions/diagnostics-linux.md

@@ -131,6 +131,18 @@ Set-AzVMExtension -ResourceGroupName <resource_group_name> -VMName <vm_name> -Lo
 
 ---
 
+### Enable auto update 
+The **recommendation** is to enable automatic update of the agent by enabling the [Automatic Extension Upgrade](../../virtual-machines/automatic-extension-upgrade.md) feature, using the following PowerShell commands.
+# [Azure CLI](#tab/azcli)
+```powershell
+az vm extension set --publisher Microsoft.Azure.Diagnostics --name LinuxDiagnostic --version 4.0 --resource-group <resource_group_name> --vm-name <vm_name> --protected-settings ProtectedSettings.json --settings PublicSettings.json --enable-auto-upgrade true
+```
+# [Powershell](#tab/powershell)
+```powershellSet-AzVMExtension -ResourceGroupName <resource_group_name> -VMName <vm_name> -Location <vm_location> -ExtensionType LinuxDiagnostic -Publisher Microsoft.Azure.Diagnostics -Name LinuxDiagnostic -SettingString $publicSettings -ProtectedSettingString $protectedSettings -TypeHandlerVersion 4.0 -EnableAutomaticUpgrade $true
+```
+
+---
+
 ### Sample installation
 
 > [!NOTE]