Data Loader - Automated way to import data with parameters from Command Line

Question

Can we automate the process of a data import operation with the following conditions ?

-> The .csv file containing the data to be imported is present in the particular folder.

-> The custom object (target object of data import) has 5 fields. 4 fields' data is available in the .csv. The fifth field should be set by the data loader itself. It is not a formula field. The fifth field will contain a string data of a Case number.

->The fifth field will be sent as one of the parameters during the batch file invocation.

Answer 1

The dataloader itself cannot modify the data in the csv. However, a shell script (batch file in Windows) can modify the csv before it is passed to the dataloader for loading.

Answer 2

For Automating the apex data loader through command line refer the following liks.....

It might be useful for your scenario....

http://www.sundoginteractive.com/sunblog/posts/automating-the-apex-data-loader

http://gaganbansalblog4u.com/2013/08/11/cli-data-loader-through-command-prompt-salesforce/