-l

ls.rb

@@ -26,6 +26,7 @@ def list_filenames
 end
 
 def ownerinfo(filenames)
+  file_blocks(filenames)
   filenames.each do |file|
     file_stat = File::Stat.new(file)
     file_type(file_stat)
@@ -40,11 +41,11 @@ def ownerinfo(filenames)
   end
 end
 
-def symbolic(file)
+def symbolic(filenames)
-  if File.lstat(file).symlink?
+  if File.lstat(filenames).symlink?
-    print " #{file} -> #{File.readlink(file)}"
+    print " #{filenames} -> #{File.readlink(filenames)}"
   else
-    print " #{file}"
+    print " #{filenames}"
   end
 end
 
@@ -71,6 +72,8 @@ def file_type(file_stat)
     print 'd'
   when 'characterSpecial'
     print 'c'
+  when 'blockSpecial'
+    print 'b'
   when 'fifo'
     print 'p'
   when 'link'
@@ -88,6 +91,13 @@ def timestamp(file_stat)
   print file_stat.mtime.strftime('%_m %_d %H:%M')
 end
 
+def file_blocks(filenames)
+  blocks = filenames.map do |file|
+    File::Stat.new(file).blocks
+  end
+  puts "total #{blocks.sum}"
+end
+
 def slice_filenames(listed_filenames)
   columns_size = listed_filenames.size.ceildiv(COLUMNS)
   listed_filenames.each_slice(columns_size).to_a