How can I convert an excel file with x, y columns to a shapefile?

How can I convert an excel file with x, y columns to a point shapefile?

There are some somewhat optional requirements in addition to the correct creation of a shapefile:

1. Column types (as per Excel's format specifiers) should be retained (especially date types)


2. Column names should be taken from the header


3. I would like to do this from the command-line



4. If I can include heterogeneous spatial references for the points in a third column I would be very happy :)