Moving docs from /vX to /docs; we will use branches for old versions.

docs/getting-started-guides/coreos/azure/lib/util.js

@@ -0,0 +1,33 @@
+var _ = require('underscore');
+_.mixin(require('underscore.string').exports());
+
+exports.ipv4 = function (ocets, prefix) {
+  return {
+    ocets: ocets,
+    prefix: prefix,
+    toString: function () {
+      return [ocets.join('.'), prefix].join('/');
+    }
+  }
+};
+
+exports.hostname = function hostname (n, prefix) {
+  return _.template("<%= pre %>-<%= seq %>")({
+    pre: prefix || 'core',
+    seq: _.pad(n, 2, '0'),
+  });
+};
+
+exports.rand_string = function () {
+  var crypto = require('crypto');
+  var shasum = crypto.createHash('sha256');
+  shasum.update(crypto.randomBytes(256));
+  return shasum.digest('hex');
+};
+
+
+exports.rand_suffix = exports.rand_string().substring(50);
+
+exports.join_output_file_path = function(prefix, suffix) {
+  return './output/' + [prefix, exports.rand_suffix, suffix].join('_');
+};