Thanks.Also
I just want to use 'msm' as an option,no value should be entered for it,how do I make sure that option msm is given but there should be no value.Will the following work?how to make the options case-insensitive?Thanks
Update:Ignore the query but i would like to know how to I stop on an unknown option given?
use Getopt::Long;
#Getting the command-line options
my %options = ();
GetOptions (\%options,'msm','des=s', 'a=s', 'd=s', 'r=i', 'v=s');
if($options(msm)){....}
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