# Create a maintenance window with the Systems Manager command line interface (CLI) for AMS Accelerate
<a name="acc-p-maint-window-cli"></a>

To create an AMS Accelerate maintenance window with the command line interface:

1. Follow the SSM [ Tutorial: Create and configure a maintenance window (AWS CLI) ](https://docs.aws.amazon.com/systems-manager/latest/userguide/maintenance-windows-cli-tutorials-create.html). For each step of the tutorial, here are sample CLI commands for patching.
**Note**  
 These examples are specific to Linux or macOS. The commands can also be run from AWS CloudShell which may be simpler than configuring `awscli` on a local machine. For details, see [Working with AWS CloudShell](https://docs.aws.amazon.com/cloudshell/latest/userguide/working-with-cloudshell.html).

   1. In step 1 of the tutorial, to create a maintenance window:

      ```
      aws ssm create-maintenance-window \
                      --name Sample-Maintenance-Window \
                      --schedule "cron(0 30 23 ? * TUE#2 *)" \
                      --duration 4 \
                      --cutoff 1 \
                      --allow-unassociated-targets \
                      --tags "Key=Environment,Value=Production"
      ```

      On successful completion, `window-id` is returned.

   1. In step 2 of the tutorial, to register a target node:

      ```
      aws ssm register-target-with-maintenance-window \
                      --window-id "mw-xxxxxxxxx" \
                      --resource-type "INSTANCE" \
                      --target "Key=tag:Environment,Values=Prod"
      ```

      On successful completion, `WindowTargetID`s are returned.

   1. In step 3 of the tutorial, to register a task:

      ```
      aws ssm register-task-with-maintenance-window \
          --window-id "mw-xxxxxx" \
          --targets "Key=WindowTargetIds,Values=63d4f63c-xxxxxx-9b1d-xxxxxfff" \
          --task-arn "AWSManagedServices-PatchInstance" \
          --service-role-arn "arn:aws:iam::AWS-Account-ID:role/ams_ssm_automation_role" \
          --task-invocation-parameters "{\"Automation\":{\"DocumentVersion\":\"\$DEFAULT\",\"Parameters\":{\"InstanceId\":[\"{{TARGET_ID}}\"],\"StartInactiveInstances\":[\"True\"]}}}" \
          --max-concurrency 50 \
          --max-errors 50 \
          --name "AutomationExample" \
          --description "Sample Description" \
          --task-type=AUTOMATION
      ```