From 36de0d4c62624524f4f2c44001cdc779f50131a0 Mon Sep 17 00:00:00 2001
From: Mirek Kratochvil <exa.exa@gmail.com>
Date: Thu, 5 Jun 2014 21:27:25 +0200
Subject: [PATCH] prevent accidental destruction of everything

---
 zb-cleanup | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/zb-cleanup b/zb-cleanup
index 5f7c07b..fbefd4d 100755
--- a/zb-cleanup
+++ b/zb-cleanup
@@ -5,6 +5,11 @@ if [[ -z "$1" || -z "$2" ]] ; then
 	exit 1
 fi
 
+if [[ "$2" -lt 100 ]] ; then
+	echo "density must not be lower than 100" >&2
+	exit 2
+fi
+
 timestamp () {
 	t="`echo \"$1\" |sed -ne 's/^.*@zb-//p' |tr 'p_' '+ '`"
 	[[ -z "$t" ]] && return 1