BCP could be an option. This is a command-line tool, so you could easily use it in a batch file. If you have never worked with BCP, I have an article here: http://www.sommarskog.se/bulkload.html.
It does not discuss Sybase IQ, though, since I am not familiar with that product. But I googled quickly, and it seems that there is a BCP for Sybase IQ.