From 7b65687da57df2e1e1ce62988f4a10cae250489d Mon Sep 17 00:00:00 2001
From: Nico Schottelius <nico@kr.ethz.ch>
Date: Sat, 15 Jan 2011 02:41:22 +0100
Subject: [PATCH] simplify backup removal code

Signed-off-by: Nico Schottelius <nico@kr.ethz.ch>
---
 ccollect | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/ccollect b/ccollect
index 1cd295d..5a254da 100755
--- a/ccollect
+++ b/ccollect
@@ -442,8 +442,7 @@ while [ "${source_no}" -lt "${no_sources}" ]; do
    _techo "Existing backups: ${count} Total keeping backups: ${c_interval}"
 
    if [ "${count}" -ge "${c_interval}" ]; then
-      substract="$((${c_interval} - 1))"
-      remove="$((${count} - ${substract}))"
+      remove="$((${count} - ${c_interval} + 1))"
       _techo "Removing ${remove} backup(s)..."
 
       ls -${TSORT}d1r | grep "${INTERVAL}\\." | head -n "${remove}" > "${TMP}" || \