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+---
+title: List of Commands
+weight: 6
+---
+
+The following commands are implemented in Flamenco Worker.
+
+{{< toc >}}
+
+
+## Blender: `blender-render`
+
+Runs Blender. Command parameters:
+
+| Parameter    | Type       | Description                                                                                                                                                                                                                                            |
+|--------------|------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| `exe`        | `string`   | Path to a Blender exeuctable. Typically the expansion of the `{blender}` [variable][variables]. If set to `"blender"`, the Worker performs a search on `$PATH` and on Windows will use the file association for the `.blend` extension to find Blender |
+| `exeArgs`    | `string`   | CLI arguments to use before any other argument. Typically the expansion of the `{blenderargs}` [variable][variables]                                                                                                                                   |
+| `argsBefore` | `[]string` | Additional CLI arguments defined by the job compiler script, to go before the blend file.                                                                                                                                                              |
+| `blendfile`  | `string`   | Path of the blend file to open.                                                                                                                                                                                                                        |
+| `args`       | `[]string` | Additional CLI arguments defined by the job compiler script, to go after the blend file name.                                                                                                                                                          |
+
+[variables]: {{< ref "/usage/variables" >}}
+
+The constructed CLI invocation will be `{exe} {exeArgs} {argsBefore} {blendfile} {args}`.
+
+Flamenco Worker monitors the logging of Blender; lines like `Saved: filename.jpg` are recognised and sent as preview images to Flamenco Manager.
+
+## FFmpeg: `create-video`
+
+Uses FFmpeg to convert an image sequence to a video file.
+
+| Parameter    | Type       | Description                                                                                                                             |
+|--------------|------------|-----------------------------------------------------------------------------------------------------------------------------------------|
+| `exe`        | `string`   | Path to the `ffmpeg` executable. If it is set to `"ffmpeg"` the Worker will look in its `tools` directory first, and search on `$PATH`. |
+| `exeArgs`    | `string`   | Its CLI parameters defined by the Manager.                                                                                              |
+| `fps`        | `float64`  | Frames per second of the video file.                                                                                                    |
+| `inputGlob`  | `string`   | Glob of input files.                                                                                                                    |
+| `outputFile` | `string`   | File to save the video to.                                                                                                              |
+| `argsBefore` | `[]string` | CLI arguments to use before the                                                                                                         |
+| `args`       | `[]string` | Additional CLI arguments defined by the job compiler script, to between the input and output filenames.                                 |
+
+The constructed CLI invocation will be `{exe} {exeArgs} {argsBefore} {platform-dependent inputGlob} {args} -r {fps} {outputFile}`, where `{platform-dependent inputGlob}` is determined by the OS of the executing Flamenco Worker.
+
+## File Management: `move-directory`
+
+Moves a directory from one path to another.
+
+| Parameter | Type     | Description                    |
+|-----------|----------|--------------------------------|
+| `src`     | `string` | Path of the directory to move. |
+| `dest`    | `string` | Destination to move it to.     |
+
+If the destination directory already exists, it is first moved aside to a timestamped path  `{dest}-{YYYY-MM-DD_HHMMSS}` to its name. The tiemstamp is the 'last modified' timestamp of that existing directory.
+
+## File Management: `copy-file`
+
+Copies a file from one location to another.
+
+| Parameter | Type     | Description                                                                       |
+|-----------|----------|-----------------------------------------------------------------------------------|
+| `src`     | `string` | Path of the file to copy. Must be an absolute path.                               |
+| `dest`    | `string` | Destination to copy it to. Must be an absolute path. This path may not yet exist. |
+
+## Misc: `echo`
+
+Writes a message to the task log.
+
+| Parameter | Type     | Description         |
+|-----------|----------|---------------------|
+| `message` | `string` | The message to log. |
+
+## Misc: `sleep`
+
+Does nothing for a period of time.
+
+
+| Parameter             | Type             | Description                                                        |
+|-----------------------|------------------|--------------------------------------------------------------------|
+| `duration_in_seconds` | `float` or `int` | The amount of time to sleep for, in seconds. Must be non-negative. |