I want it to give me the output in a file. How and where do I declare the output file details?

stevieb has already suggested that you should see open. Did you read that? Did you understand it?

What about perlintro - have you read that? If not, you really should. It even contains some very simple examples of how to open and write to files.

In reply to Re^5: How to write to a file? by hippo
in thread How to count the length of a sequence of alphabets and number of occurence of a particular alphabet in the sequence? by davi54

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