# Alternative Use Cases

While ``PeterDocs`` has been built with the objective to transfer documents from
one computer to another where the computers are on isolated networks, there are
alternatives uses.

## Documents on the same network

You can use ``PeterDocs`` to reconcile files transferred using the Windows
``Robocopy`` command.  Robocopy is installed by default on your Windows
system.

Robocopy does require your source and target folders to be accessible from
the coputer that is executing the command.

To use ``PeterDocs`` and ``Robocopy`` install PeterDocs from the PowerShell Gallery
and execute the below commands in a PowerShell terminal, changing the values to suit.

```powershell
New-PeterReconcile -ReconcileFile .\myrobocopy.csv -SourceFolder <Source> -ExcludeHash 
robocopy <Source> <Destination> /mt /e /z /j /copy:DAT /dcopy:DAT /r:100 /eta /log+:robocopy_run.log /tee
Compare-Peter -ReconcileFile .\myrobocopy.csv -RestoreFolder <Destination> -ExcludeHash
```

The source and destination folders can be network paths i.e. start with \\\\

The above robocopy command retries 100 times failed copies.  The default is a million with a 30 second
wait time between retries.  Probably no a realistic time before failing.

If you want to verify the HASH for each file copied, then remove the ``-ExcludeHash`` directive.  Be
warned that generating a hash on both source and destination will take some time if you
have many files.

Further information on Robocopy can be found on the internet such as:

* [https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/robocopy](https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/robocopy)
* [https://pureinfotech.com/robocopy-transfer-files-fast-network-windows-10/](https://pureinfotech.com/robocopy-transfer-files-fast-network-windows-10/)
* [https://www.techrepublic.com/article/how-to-quickly-back-up-just-your-data-in-windows-10-with-robocopys-multi-threaded-feature/](https://www.techrepublic.com/article/how-to-quickly-back-up-just-your-data-in-windows-10-with-robocopys-multi-threaded-feature/)
* [https://www.youtube.com/watch?v=gTzTeHmKMKw](https://www.youtube.com/watch?v=gTzTeHmKMKw)

## Picture EXIF data

You can use ``PeterDocs`` to extract EXIF data from your picture files.  To do
this just install PeterDocs from the PowerShell Gallery and execute the
below command in a PowerShell terminal, changing the values to suit.

```powershell
New-PeterReconcile -ReconcileFile .\mypictures_metadata.csv -SourceFolder <Source> -ExcludeHash -IncludeExif
```

At the conclusion of the exceution, you will have a file named ``##peter_exif##.csv`` that
contains your pictures metadata.  You will also have a CSV file with picture file
general metadata named ``mypictures_metadata.csv`` such as creation time and size.

Further information on EXIF can be found on the internet such as:

* [https://en.wikipedia.org/wiki/Exif](https://en.wikipedia.org/wiki/Exif)
* [https://photographylife.com/what-is-exif-data](https://photographylife.com/what-is-exif-data)
* [https://exiftool.org/](https://exiftool.org/)