Due to certain reasons I want to read in the input file in <DATA> format

Am I understanding you correctly that you want the code that reads from the filehandle to look like <DATA> instead of <$in>? Is that what you are trying to accomplish with open(DATA,$in);? If you could explain what your "certain reasons" are, that might help in finding a better solution.

In reply to Re: Unable to write output to file taken as input from command line by Anonymous Monk
in thread Unable to write output to file taken as input from command line by zing

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