From ca0c5b8a50fbf34200912c2635bb8c4b12a820d2 Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Thu, 6 Jul 2017 21:45:50 +0200
Subject: Initial commit

---
 buff-di-wuff | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100755 buff-di-wuff

diff --git a/buff-di-wuff b/buff-di-wuff
new file mode 100755
index 0000000..d14a239
--- /dev/null
+++ b/buff-di-wuff
@@ -0,0 +1,23 @@
+#!/bin/sh
+
+set -e
+
+cache_dir='/var/cache/buff-di-wuff'
+
+mkdir -p "${cache_dir}"
+
+grep '^[^#]' '/etc/buff-di-wuff.list' | \
+  while read -r url; do
+    if ! wget -O "${cache_dir}/tmp" "${url}" 2> /dev/null; then
+      continue
+    fi
+    sum="$(
+      sha512sum "${cache_dir}/tmp" | \
+        cut -d' ' -f1
+    )"
+    if [ ! -f "${cache_dir}/${sum}" ]; then
+      mv "${cache_dir}/tmp" "${cache_dir}/${sum}"
+    else
+      rm "${cache_dir}/tmp"
+    fi
+  done
-- 
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