Data Loader questions

Hello,

We need some help with two questions related with Data Loader tool.

In our project, we need to process .CSV files automatically using ‘Data Loader’ tool. We want to know if after doing a data charge with that tool is possible to extract the log into a file.

The other question is that our customer will send different kinds of files (LineItemValue and ResourceDriverValue). Is there any way for Data Loader to distinguish between those different files?

Thanks in advance,

Best Regards