comments and refactoring

1 files changed, 10 insertions, 0 deletions

diff --git a/cmd/vhost/main.go b/cmd/vhost/main.go
index dbf899a..26280ef 100644
--- a/cmd/vhost/main.go
+++ b/cmd/vhost/main.go
@@ -84,6 +84,16 @@ func main() {
 					ifaceName := line[3:]
 					ipstack.InterfaceUpREPL(ifaceName)
 				}
+			} else {
+				fmt.Println("Invalid command: ", line)
+				fmt.Println("Commands: ")
+				fmt.Println("  exit Terminate this program")
+				fmt.Println("    li List interfaces")
+				fmt.Println("    lr List routes")
+				fmt.Println("    ln List available neighbors")
+				fmt.Println("    up Enable an interface")
+				fmt.Println("  down Disable an interface")
+				fmt.Println("  send Send test packet")
 			}
 			continue
 		}