Please help me days to a date string in PERL

Shell Programming and Scripting
1

Please help me n days to a date string in PERL. Date is of the format YYYYMMDD

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Add n days

2

What?
Perhaps give input and desired output?

3

Say I have a string of the format YYYYMMDD. I want to add n days to it. For example the date is 20130228 and n is 6. SO the new date should be 20130206.