From 97cb7ad208734e7706b6906b62ee05c4ed9a15f1 Mon Sep 17 00:00:00 2001
From: Olaf Rempel <razzor@kopf-tisch.de>
Date: Wed, 26 Jul 2006 17:19:44 +0200
Subject: [PATCH] add cleanup-backups.sh

---
 cleanup-backups.sh | 47 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 cleanup-backups.sh

diff --git a/cleanup-backups.sh b/cleanup-backups.sh
new file mode 100644
index 0000000..c8ea538
--- /dev/null
+++ b/cleanup-backups.sh
@@ -0,0 +1,47 @@
+#!/bin/bash
+
+# format: db-dumps-YYYY-MM-DD.sql.gz
+BACKUPS="/home/backups/db-dump-*"
+
+DAILY_COUNT="14"
+WEEKLY_COUNT="8"
+MONTHLY_COUNT="12"
+
+# -----
+
+TODAY=$(date +%Y%m%d)
+TODAY_WEEKDAY=$(date +%w)
+
+
+TEMPFILE=$(mktemp)
+
+# create list
+for offset in `seq 0 $DAILY_COUNT`; do
+    tmp=$(date +%Y-%m-%d -d "-$offset days")
+    echo $tmp >> $TEMPFILE
+done
+
+for offset in `seq 0 $WEEKLY_COUNT`; do
+    calc=$[$offset * 7]
+    calc=$[$calc + $TODAY_WEEKDAY]
+
+    tmp=$(date +%Y-%m-%d -d "-$calc days")
+    echo $tmp >> $TEMPFILE
+done
+
+for offset in `seq 0 $MONTHLY_COUNT`; do
+    calc=$[$offset * 28]
+    calc=$[$calc + $TODAY_WEEKDAY]
+
+    tmp=$(date +%Y-%m-%d -d "-$calc days")
+    echo $tmp >> $TEMPFILE
+done
+
+# remove files not on the list
+ls -1 ${BACKUPS} | while read filename; do
+    filedate=$(echo $filename | awk -F'-' '{print $3-$4-$5}')
+
+    grep $filedate $TEMPFILE &> /dev/null || rm $filename
+done
+
+rm $TEMPFILE