diff --git a/wc.rb b/wc.rb
new file mode 100644
index 0000000..7616467
--- /dev/null
+++ b/wc.rb
@@ -0,0 +1,24 @@
+def wc(file_path)
+  lines = 0
+  words = 0
+  bytes = 0
+
+  File.open(file_path) do |file|
+    file.each_line do |line|
+      lines += 1
+      words += line.split.size
+      bytes += line.bytesize
+    end
+  end
+
+  [lines, words, bytes]
+end
+
+file_path = ARGV[0]
+if file_path.nil?
+  puts 'ファイルパスがありません。'
+  exit
+end
+
+lines, words, bytes = wc(file_path)
+puts "行数：#{lines}\n単語数：#{words}\nバイト数：#{bytes}\nファイルパス：#{file_path}"