Along with the fine comments by fishbot_v2, I'd also like to point out that your subroutines need not be named. This is the perfect situation to use anonymous subroutines. Here's how I would define your hash:

my %commands = (
    "set time" => sub {
        print "nMetrics>You have entered the settime command\n";
        print "nMetrics>The argument given is $_[0]\n";
    },
    "show time" => sub {
        print "nMetrics>You have entered the show time command\n";
    },
    default => sub {
        print "nMetrics>Invalid command line options\n";
    }
);

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In reply to Re^5: CLI using hashes by revdiablo
in thread CLI using hashes by bahadur

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