diff --git a/README.md b/README.md
new file mode 100644
index 0000000..2911a39
--- /dev/null
+++ b/README.md
@@ -0,0 +1,4 @@
+## Example
+```
+ruby gen-rsc.rb il-domains.txt IL_SPEEDTEST_DOMS
+```
diff --git a/gen-rsc.rb b/gen-rsc.rb
new file mode 100755
index 0000000..53638d8
--- /dev/null
+++ b/gen-rsc.rb
@@ -0,0 +1,19 @@
+#!/usr/bin/env ruby
+
+domainsFilename = ARGV[0]
+addressListName = ARGV[1]
+
+if addressListName.nil? or domainsFilename.nil?
+	STDERR.puts("Missing cli arguments")
+	exit 1
+end
+
+domains = File.open(domainsFilename).readlines
+
+domains.each do |l|
+	l = l.chomp.strip
+	next if l.empty?
+	next if l[0] == "#"
+
+	puts "/ip/firewall/address-list/add list=#{addressListName} address=#{l}"
+end