From 144fb6fe7db5b8155fb1fd5f6e0cc233d0ebf932 Mon Sep 17 00:00:00 2001
From: Scott Moser <smoser@ubuntu.com>
Date: Thu, 23 Jan 2014 16:48:12 -0500
Subject: [PATCH] fix util.which if PATH is not in environment

This fixes a test case that failed because PATH was unset in the os.environ.
---
 cloudinit/util.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cloudinit/util.py b/cloudinit/util.py
index ce8dacbe..77f9ab36 100644
--- a/cloudinit/util.py
+++ b/cloudinit/util.py
@@ -1850,7 +1850,7 @@ def which(program):
         if is_exe(program):
             return program
     else:
-        for path in os.environ["PATH"].split(os.pathsep):
+        for path in os.environ.get("PATH", "").split(os.pathsep):
             path = path.strip('"')
             exe_file = os.path.join(path, program)
             if is_exe(exe_file):