Generating files with time interval of fifteen minutes

Shell Programming and Scripting
1

Hi Guys,

      I have two dates as start date and end date.. i need to generate files within these two dates with time interval of half an hour....

i.e. Start Date=25/09/07 12:00:00
End Date=26/09/07 12:00:00

Now i need to generate files every half an hour..totally 48 files...

i need a PERL script

This is very urgent!!!!!!!!!!!!!!!!!

Thanks in advance