From b73f1c4db9c0ba683488a8138be057918c2bdabe Mon Sep 17 00:00:00 2001
From: Jan-Piet Mens <jpmens@gmail.com>
Date: Thu, 20 Aug 2015 21:33:16 +0200
Subject: [PATCH] usage if !username or !device

---
 ocat.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ocat.c b/ocat.c
index 999c10c..2840b17 100644
--- a/ocat.c
+++ b/ocat.c
@@ -105,7 +105,11 @@ int main(int argc, char **argv)
 	} else if (username && device && (argc > 0)) {
 		fprintf(stderr, "%s: filename with --user and --device is not supported\n", progname);
 		return (-1);
+	} else if (!username || !device) {
+		usage(progname);
 	}
+
+
 	
 
 	/*