--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/bin/installto.sh	Thu Jan 04 15:52:31 2018 -0500
@@ -0,0 +1,87 @@
+#!/usr/bin/env php
+<?php
+/*
+ +-----------------------------------------------------------------------+
+ | bin/installto.sh                                                      |
+ |                                                                       |
+ | This file is part of the Roundcube Webmail client                     |
+ | Copyright (C) 2014, The Roundcube Dev Team                            |
+ |                                                                       |
+ | Licensed under the GNU General Public License version 3 or            |
+ | any later version with exceptions for skins & plugins.                |
+ | See the README file for a full license statement.                     |
+ |                                                                       |
+ | PURPOSE:                                                              |
+ |   Update an existing Roundcube installation with files from           |
+ |   this version                                                        |
+ +-----------------------------------------------------------------------+
+ | Author: Thomas Bruederli <roundcube@gmail.com>                        |
+ +-----------------------------------------------------------------------+
+*/
+
+define('INSTALL_PATH', realpath(__DIR__ . '/..') . '/' );
+
+require_once INSTALL_PATH . 'program/include/clisetup.php';
+
+$target_dir = unslashify($_SERVER['argv'][1]);
+
+if (empty($target_dir) || !is_dir(realpath($target_dir)))
+  rcube::raise_error("Invalid target: not a directory\nUsage: installto.sh <TARGET>", false, true);
+
+// read version from iniset.php
+$iniset = @file_get_contents($target_dir . '/program/include/iniset.php');
+if (!preg_match('/define\(.RCMAIL_VERSION.,\s*.([0-9.]+[a-z-]*)/', $iniset, $m))
+  rcube::raise_error("No valid Roundcube installation found at $target_dir", false, true);
+
+$oldversion = $m[1];
+
+if (version_compare(version_parse($oldversion), version_parse(RCMAIL_VERSION), '>='))
+  rcube::raise_error("Installation at target location is up-to-date!", false, true);
+
+echo "Upgrading from $oldversion. Do you want to continue? (y/N)\n";
+$input = trim(fgets(STDIN));
+
+if (strtolower($input) == 'y') {
+  $err = false;
+  echo "Copying files to target location...";
+  $dirs = array('program','installer','bin','SQL','plugins','skins');
+  if (is_dir(INSTALL_PATH . 'vendor') && !is_file(INSTALL_PATH . 'composer.json')) {
+    $dirs[] = 'vendor';
+  }
+  foreach ($dirs as $dir) {
+    if (!system("rsync -avC " . INSTALL_PATH . "$dir/* $target_dir/$dir/")) {
+      $err = true;
+      break;
+    }
+  }
+  foreach (array('index.php','.htaccess','config/defaults.inc.php','composer.json-dist','CHANGELOG','README.md','UPGRADING','LICENSE','INSTALL') as $file) {
+    if (!system("rsync -av " . INSTALL_PATH . "$file $target_dir/$file")) {
+      $err = true;
+      break;
+    }
+  }
+  // remove old (<1.0) .htaccess file
+  @unlink("$target_dir/program/.htaccess");
+  echo "done.\n\n";
+
+  if (is_dir("$target_dir/skins/default")) {
+      echo "Removing old default skin...";
+      system("rm -rf $target_dir/skins/default $target_dir/plugins/jqueryui/themes/default");
+      foreach (glob(INSTALL_PATH . "plugins/*/skins") as $plugin_skin_dir) {
+          $plugin_skin_dir = preg_replace('!^.*' . INSTALL_PATH . '!', '', $plugin_skin_dir);
+          if (is_dir("$target_dir/$plugin_skin_dir/classic"))
+            system("rm -rf $target_dir/$plugin_skin_dir/default");
+      }
+      echo "done.\n\n";
+  }
+
+  if (!$err) {
+    echo "Running update script at target...\n";
+    system("cd $target_dir && php bin/update.sh --version=$oldversion");
+    echo "All done.\n";
+  }
+}
+else
+  echo "Update cancelled. See ya!\n";
+
+?>