> For the complete documentation index, see [llms.txt](https://data-programs.gitbook.io/singularity/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://data-programs.gitbook.io/singularity/cli-reference/prep.md).

# Prep

{% code fullWidth="true" %}

```
NAME:
   singularity prep - Create and manage dataset preparations

USAGE:
   singularity prep command [command options]

COMMANDS:
   rename   Rename a preparation
   remove   Remove a preparation
   help, h  Shows a list of commands or help for one command
   Job Management:
     status        Get the preparation job status of a preparation
     start-scan    Start scanning of the source storage
     pause-scan    Pause a scanning job
     start-pack    Start / Restart all pack jobs or a specific one
     pause-pack    Pause all pack jobs or a specific one
     start-daggen  Start a DAG generation that creates a snapshot of all folder structures
     pause-daggen  Pause a DAG generation job
   Piece Management:
     list-pieces   List all generated pieces for a preparation
     add-piece     Add a piece to a preparation. If the piece exists in the database, metadata is copied. Otherwise, --piece-size is required.
     delete-piece  Delete a piece from a preparation
   Preparation Management:
     create         Create a new preparation
     list           List all preparations
     attach-source  Attach a source storage to a preparation
     attach-output  Attach an output storage to a preparation
     detach-output  Detach an output storage from a preparation
     explore        Explore prepared source by path
   Wallet Management:
     attach-wallet  Attach a wallet to a preparation
     list-wallets   List attached wallets with a preparation
     detach-wallet  Detach a wallet from a preparation

OPTIONS:
   --help, -h  show help
```

{% endcode %}


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