diff --git a/README.md b/README.md
index 8a49c3e..23779cb 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,14 @@
-## Start up
+## Hello, World
 
 1. go build hello.go
 2. ./hello
+
+## Args Sample
+
+```bash
+$ ./args
+args: [./args hoge fuga piyo]
+args: [hoge fuga piyo]
+args: hoge,fuga,piyo
+$
+```
diff --git a/args.go b/args.go
new file mode 100644
index 0000000..af4b3e9
--- /dev/null
+++ b/args.go
@@ -0,0 +1,15 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"strings"
+)
+
+
+func main() {
+	fmt.Printf("args: %+v\n", os.Args)
+	fmt.Printf("args: %+v\n", os.Args[1:])
+	fmt.Printf("args: %s\n", strings.Join(os.Args[1:], ","))
+}
+