displaying input from file

cli/exercise_02/input_fromfile.pl

@@ -0,0 +1,27 @@
+#!/usr/bin/env perl
+use strict;
+use warnings;
+
+use IO::File;
+use File::Basename;
+
+
+my $script = basename($0);
+my $USAGE = <<USAGE
+Usage: $script <infile>
+USAGE
+;
+
+if (!defined $ARGV[0]) {
+    die $USAGE;
+}
+
+my $infile = $ARGV[0];
+open(DAT, $infile) or die "$infile: $!";
+print <DAT>;
+
+close(DAT);
+
+
+1;
+__END__