From 2bc5c58d85990e483af8fde57ed5f2442351b69c Mon Sep 17 00:00:00 2001
From: tv <tv@shackspace.de>
Date: Sat, 11 Jul 2015 19:44:12 +0200
Subject: move old stuff

---
 old/bin/netmask-to-prefix | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100755 old/bin/netmask-to-prefix

(limited to 'old/bin/netmask-to-prefix')

diff --git a/old/bin/netmask-to-prefix b/old/bin/netmask-to-prefix
new file mode 100755
index 000000000..1c4dbeb28
--- /dev/null
+++ b/old/bin/netmask-to-prefix
@@ -0,0 +1,12 @@
+#! /bin/sh
+set -euf
+
+netmask=$1
+
+binaryNetmask=$(echo $1 | sed 's/^/obase=2;/;s/\./;/g' | bc | tr -d \\n)
+binaryPrefix=$(echo $binaryNetmask | sed -n 's/^\(1*\)0*$/\1/p')
+if ! echo $binaryPrefix | grep -q .; then
+  echo $0: bad netmask: $netmask >&2
+  exit 4
+fi
+printf %s $binaryPrefix | tr -d 0 | wc -c
-- 
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