> ## Documentation Index
> Fetch the complete documentation index at: https://docs.blinkops.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Creating a Simple Workflow: Hello World
> Create a simple Hello World workflow using Bash and Python with input parameters and step references in Blink.
## Prerequisites
* A Blink account. Sign up [here](https://app.blinkops.com).
## Creating a New Pack
A Pack is a collection of Automated Workflows. If you already have a Pack you can open it and skip ahead to [creating a new Workflow](#creating-a-new-workflow).
If you don't have an existing pack, follow these steps:
1. Navigate to the **Workflow** page in your **Workspace**.
2. In the left-hand sidebar, click the **"+"** icon
3. Fill in the necessary details:
**Pack name**: *My first Pack*
**Description**: *This is a Pack*.
4. Then click the **Create** button. The new Pack is displayed on your Workflow's screen.
## Creating a New Workflow
1. Click **Create Workflow**.
2. Enter the parameters:
* **Workflow Name**: *Hello World*
* **Workflow description**: *This is Hello World*
* **Tags**: *Demo*, *Hello World*
3. Select a [Trigger Type](/docs/workflows/building-workflows/triggers): [On-Demand](/docs/workflows/building-workflows/triggers/on-demand-triggers)
4. Click **Create Workflow**. You will be redirected to the **Editor page** of the Workflow.
## Workflow Step: Printing Hello World
1. Click to open the **Action panel**. Alternatively, you can drag Actions to your flow, from the menu on the left side of your **Edit** screen.
2. Search and select the Run Bash Script Action.
3. Enter the following code in your Step:
* echo "Hello World"
4. Test the Step by clicking **Test run**. In the **Output** field you will see Hello World. *COMPLETED* appears on the right side of the Step, indicating the Step has succeeded.
## Workflow Step: Printing Hello World using Input Parameters
The same Workflow Step can be created using [input parameters](/docs/workflows/building-workflows/triggers/on-demand-triggers/input-parameters).
### Setting Input Parameters
1. In the Workflow editor, click the **+** icon.
2. Enter the parameters:
| Parameter | Description |
| ------------------ | ----------------- |
| Parameter Name | Name |
| Parameter Type | Text |
| Required Parameter | Check the box |
| Display Name | Name |
| Placeholder | Name for greeting |
| Default Value | Jon |
3. Click "Apply". The parameters are displayed under "Input Parameters".
### Updating the Step
1. Click to open the **Action panel**. Alternatively, you can drag Actions to your flow, from the menu on the left side of your **Edit** screen.
2. Search and select the Bash Action.
3. Enter the following parameters in your Step.
4. Click on **Action #1** to change the name of the action to *Print hello world*.
5. Enter the following code: echo \{\{inputs.user\_name}}
6. Test the Step by clicking **Test run**.
7. Enter the input parameter **Name**: *Jon*. In the **Output** field you will see **`hello Jon`**.
8. "COMPLETED" appears on the right-hand side of the Step, indicating the Step has succeeded.
## Workflow Step: Printing Hello World using Python and Input Parameters
The same Workflow Step can be created using python. In Python action, you can access [the context object dictionary](/docs/workflows/building-workflows/dynamic-variables/expression-language/workflow-engine-variables) and get values from input parameters, variables and Step outputs.
1. Click to open the **Action panel**. Alternatively, you can drag Actions to your flow, from the menu on the left side of your **Edit** screen.
2. Search and select the Python Action.
3. Enter the following parameters in your Step.
4. Click on **Action #2** to change the name of the action to *Print hello world using Python*.
5. Enter the following code:
* `print("hello" + context.inputs.name)`
* `print(context.steps.s1.output)`
6. Test the Step by clicking **Test run**.
7. Enter the input parameter "Name": *Jon*. In the **Output** field you will see:
```Bash theme={"dark"}
hello Jon
Hello Jon
```
8. "COMPLETED" appears on the right-hand side of the Step, indicating the Step has succeeded. The Step took the input parameter and the output from the previous Step to produce the output.
## Running the Workflow
The Workflow can be run in several ways:
* Manually in an interactive session: While creating a Workflow we start a session and run steps or sections one by one, so we can edit them and rerun them in the same session.
* Manually in a non-interactive session: This is when you run the entire workflow. This can be triggered from the Workflow page by clicking on **Run All** button or from the Workflow page.