From 7edf4a79ac031fb027a91e05bb734aca4d8f7c5a Mon Sep 17 00:00:00 2001
From: Roger Luethi <rl@patchworkscience.org>
Date: Thu, 28 Aug 2014 06:42:21 +0200
Subject: [PATCH] labs: exit for invalid syntax

Make osbash exit with an explanation if no option for building VMs (-b),
creating Windows batch scripts (-w), or exporting node VMs (-e) is given
(there is nothing to do).

Change-Id: I2376a792fcd6303c64a21f4378acb15bd99a476f
---
 labs/osbash.sh | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/labs/osbash.sh b/labs/osbash.sh
index c4ae697f..3e151f83 100755
--- a/labs/osbash.sh
+++ b/labs/osbash.sh
@@ -154,6 +154,12 @@ if [ -n "${EXPORT_VM_DIR:-}" ]; then
     exit
 fi
 
+if [ -z "${OSBASH:-}" -a -z "${WBATCH:-}" ]; then
+    echo
+    echo "No -b, -w, or -e option given. Exiting."
+    exit
+fi
+
 echo >&2 "$(date) osbash starting"
 
 clean_dir "$LOG_DIR"