I still can seem to understand how to extract from arrays. Can someone help me to print the name only if it exists in the array. Thanks ! 
@system_name = qw(box1 box2);
print "Please select a system to pull from\n";

$system1 = <STDIN>;
chomp ($system1);

$original_system = $system1;             # save for later use
$system1 =~ s/\W.*//;                 # get rid of everything after th
+e first word
$system1 =~ tr/A-Z/a-z/;            # lowercase everything

if (defined(@system_name = $system1)) {
print "You have selected $system1\n";
}

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In reply to array confusion by Anonymous Monk

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