Editing multiple files at once is made easier in the vim text editor with the use of tabs. Vincent Danen goes over the basic tab commands and shows you how to combine them with key bindings to make ...

OpenOffice Calc is a helpful utility for converting your spreadsheet files to other formats, including tab-delimited CSV files. This export feature is an important one that is included with other ...

Excel could do this quite easily. Just import it and delete the 4th column. Not sure if this is a one off thing or not.