From 51ff72f7b458909071c4a42dbd25ab28ac16f3f8 Mon Sep 17 00:00:00 2001
From: Patrick J Cherry <patrick@bytemark.co.uk>
Date: Tue, 31 Jan 2017 11:39:39 +0000
Subject: Update util.rb

---
 lib/byteback/util.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/byteback/util.rb b/lib/byteback/util.rb
index ebf5ca5..d70888b 100644
--- a/lib/byteback/util.rb
+++ b/lib/byteback/util.rb
@@ -69,7 +69,7 @@ module Byteback
 
     def btrfs_bin
       %w(/bin/btrfs /sbin/btrfs).each do |path|
-        return path if File.exist?(path)
+        return path if File.executable?(path)
       end
       raise Errno::ENOENT, 'btrfs'
     end
-- 
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