Actually the exact requirement is as below: 

1. Use GetOptions to process the input command line.
2. Do the required validation. This will result in modifying the command line paramteres
   and resultant will be stored in a hash.
3. Use this hash in order to form the command line again.

The problem is while doing the 3rd step, I need to distinguish if a given argument is a toggle or a parameter. So, I want to distinguish between 1( toggle ) and '1'( argument ).

In reply to Re^2: How to check if a scalar value is numeric or string? by bgupta
in thread How to check if a scalar value is numeric or string? by bgupta

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