# Internal variables

The following variables are always defined:

| Variable Name                     | Sample Value          |
| --------------------------------- | --------------------- |
| **Internal.Kettle.Build.Date**    | `2010/05/22 18:01:39` |
| **Internal.Kettle.Build.Version** | `2045`                |
| **Internal.Kettle.Version**       | `4.3`                 |

These variables are defined in a transformation:

| Variable Name                                    | Sample Value                                        |
| ------------------------------------------------ | --------------------------------------------------- |
| **Internal.Transformation.Filename.Directory**   | `D:\Kettle\samples`                                 |
| **Internal.Transformation.Filename.Name**        | `Denormaliser - 2 series of key-value pairs.ktr`    |
| **Internal.Transformation.Name**                 | `Denormaliser - 2 series of key-value pairs sample` |
| **Internal.Transformation.Repository.Directory** | `/`                                                 |

These are the internal variables that are defined in a job:

| Variable Name                         | Sample Value             |
| ------------------------------------- | ------------------------ |
| **Internal.Job.Filename.Directory**   | `file:///home/matt/jobs` |
| **Internal.Job.Filename.Name**        | `Nested jobs.kjb`        |
| **Internal.Job.Name**                 | `Nested job test case`   |
| **Internal.Job.Repository.Directory** | `/`                      |

These are the internal variables that are defined in a transformation or job within a project:

| Variable Name                            | Sample Value                                       |
| ---------------------------------------- | -------------------------------------------------- |
| **Internal.Project.Data.Directory**      | `pvfs://Repository/home/admin/projects/myproject/` |
| **Internal.Project.Execution.Directory** | `/home/admin/projects/myproject`                   |
| **Internal.Project.Name**                | `My project`                                       |
| **Internal.Project.Description**         | `Description of my project`                        |

{% hint style="info" %}
**Note:** Although both of the project directory variables specify the path to a project, they are used in different situations.

* **Internal.Project.Data.Directory:** Used by steps that are not aware of the repository, such as steps that access files as data, like [Text File Input](/pdia-data-integration/pdi-transformation-steps-reference-overview/text-file-input-cp.md) and [Create File](https://pentaho-community.atlassian.net/wiki/spaces/EAI/pages/371558469/Create+a+file). You can use this variable in fields that allow you to select VFS connections while connected to the repository.
* **Internal.Project.Execution.Directory:** Used by steps that are aware of the repository, such as steps that execute other transformations and jobs, like [Transformation Executor](/pdia-data-integration/pdi-transformation-steps-reference-overview/transformation-executor.md), [Transformation (job entry)](/pdia-data-integration/pdi-job-entries-reference-overview/transformation-job-entry-cp.md) and [Job (job entry)](/pdia-data-integration/pdi-job-entries-reference-overview/job-job-entry.md). You can use this variable in fields that allow you to select a Pentaho repository, but not VFS connections.
  {% endhint %}

These variables are defined in a transformation running on a slave server, executed in clustered mode:

| Variable Name                            | Sample Value                         |
| ---------------------------------------- | ------------------------------------ |
| **Internal.Slave.Transformation.Number** | `0..<cluster size-1> (0,1,2,3 or 4)` |
| **Internal.Cluster.Size**                | `<cluster size> (5)`                 |

{% hint style="info" %}
**Notes:**&#x20;

* In addition to the above, there are also System parameters, including command line arguments. These can be accessed using the [Get System Info](/pdia-data-integration/pdi-transformation-steps-reference-overview/get-system-info.md) step in a transformation.
* Additionally, you can specify values for variables in the Execute a transformation dialog box. If you include the variable names in your transformation they will appear in this dialog box.
  {% endhint %}


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