diff --git a/whothis/main.go b/whothis/main.go
new file mode 100644
index 0000000..8eaef59
--- /dev/null
+++ b/whothis/main.go
@@ -0,0 +1,12 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+func main() {
+	fmt.Printf("args: %#v\n", os.Args)
+	fmt.Printf("prog: %s\n", filepath.Base(os.Args[0]))
+}