From 33d573907d3ffc790e28102ecac15c3be6a85462 Mon Sep 17 00:00:00 2001
From: Scott Moser <smoser@brickies.net>
Date: Fri, 21 Jul 2017 13:34:05 -0400
Subject: tools/run-centos: make running with no argument show help.

If you ran tools/run-centos without an argument it would fail due
to 'set -u' like:
  ./tools/run-centos: line 266: 1: unbound variable
---
 tools/run-centos | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'tools/run-centos')

diff --git a/tools/run-centos b/tools/run-centos
index b10e3bc4..d44d5145 100755
--- a/tools/run-centos
+++ b/tools/run-centos
@@ -262,7 +262,7 @@ main() {
     return 0
 }
 
-if [ "$1" = "prep" ]; then
+if [ "${1:-}" = "prep" ]; then
     shift
     prep "$@"
 else
-- 
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