From c83e7bd5de889f6a44e56a6f53d63bef0ff87588 Mon Sep 17 00:00:00 2001
From: Mirek Kratochvil <exa.exa@gmail.com>
Date: Tue, 8 Apr 2014 19:42:57 +0200
Subject: [PATCH] there should have been "bc" but this is better

---
 zb-cleanup | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/zb-cleanup b/zb-cleanup
index cadb717..4b69990 100755
--- a/zb-cleanup
+++ b/zb-cleanup
@@ -24,7 +24,7 @@ done |sort -n | while read l ; do
 		break
 	fi
 	
-	if [ `echo "$density*($curtime-$lasttime)/($timenow-$lasttime)"` -lt 1] ; then
+	if [ $(( $density*($curtime-$lasttime)/($timenow-$lasttime) )) -lt 1] ; then
 		zfs destroy "$snapname"
 	else
 		lasttime="$curtime"