LOAD ? UNLOAD ?

Hi all ! I want to unload data from a table to a file.But i want it to unload it to a file in a different directory or a specific directory. But by default it unload it to ur present directory. I tried this way unload to ~/nj/n/<file-name> select * from emp load from ~/nj/n/<file-name> insert into empPlease reply urgently. Bye Thanks in advance Nayan