A UNIX Command $perl scalar.pl The variable $fred contains Fred here. Sum is 66. $cat scalar.pl $fred = “Fred here”; $barney = 56; $sum = 10 + $barney; print ‘The variable $fred’ . ” contains $fred.\n”; print “Sum is $sum.\n”; $cat scalar.pl $fred = “Fred here”; $barney = 56; $sum = 10 + $barney; print …