diff --git a/main.go b/main.go
new file mode 100644
index 0000000..ec1a30b
--- /dev/null
+++ b/main.go
@@ -0,0 +1,20 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/user"
+
+	"monkey/repl"
+)
+
+// TODO(tijani): add quit command.
+func main() {
+	user, err := user.Current()
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Printf("Hello %s! Welcome to the Monkey programming language!\n", user.Username)
+	repl.Start(os.Stdin, os.Stdout)
+}