To explain again ,the ones in "[]" are optional sub-options(they may or may not present always) to the values of "input"option, data,modem,apps are values to option "input",they can also change.

EXAMPLE:-
findfiles -input [-nd -na ] data [-nc -nd] modem apps -des "finding fi
+les" -r 1000

Basically ,pseudco code of what I want to achieve is below.Really appr
+eciate if someone can give me the perlversion of the code.
for each "input option value"
{

call function A if not exits nd

call function B if not exits na

call function C if not exists nc
}
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