same

ch1/echo/1_1.go

@@ -0,0 +1,12 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"strings"
+)
+
+func main() {
+	fmt.Printf("command: %s\n", os.Args[0])
+	fmt.Printf("args: %s\n", strings.Join(os.Args[1:], " "))
+}