ds can now handle relative and absolute paths

interpreted/ds

@@ -24,18 +24,39 @@
 use strict;
 use warnings;
 use File::Find;
+use Cwd;
+use Getopt::Long;
 
-if (@ARGV == 0) {
+my $help;
+my $verbose;
+
+my $usage = "Usage: $0 <directory_path>\n";
+
+GetOptions(
+    'help|h' => \$help,
+    'verbose|v' => \$verbose,
+) or die $usage;
+
+if ($help) {
     print <<EOF;
-\nUsage: $0 <directory_path>
+\n$usage
-
 Calculate the size of a directory and its contents.\n
+
+Options:
+  -h, --help        Show this help message and exit
+  -v, --verbose     List all files and folders encountered
 EOF
     exit;
 }
 
+if (@ARGV != 1) {
+    die $usage;
+}
+
 my $dir_path = $ARGV[0];
 
+$dir_path = Cwd::abs_path($dir_path);
+
 unless (-d $dir_path) {
     die "$dir_path is not a directory\n"
 }
@@ -53,6 +74,15 @@ sub calculate_size {
 
     if (-f $file) {
         $total_size += -s $file;
+        if ($verbose) {
+            print "File: $file\n"
+        }
+    }
+
+    if (-d $file) {
+        if ($verbose) {
+            print "Directory: $file\n"
+        }
     }
 }