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README.md

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+# LxRunOffline
+An offline installer for Bash on Windows.
+
+# Features
+- **No Internet access required when installing!**
+- **Install any version of Ubuntu!**
+
+# How to use
+1. Download a Ubuntu pre-installed disk image.
+  - Download an image from Ubuntu Cloud Image: https://cloud-images.ubuntu.com/releases/.<br/>
+    Note: Download the files that are named as xx-server-cloudimg-amd64-root.tar.gz.
+  - Download the Ubuntu 14.04 image from Microsoft: https://wsldownload.azureedge.net/trusty-server-cloudimg-amd64-root.tar.gz.
+  - Download the Ubuntu 16.04 image from Microsoft: https://wsldownload.azureedge.net/16.4.1-server-cloudimg-amd64-root.tar.gz.
+2. Download the icon file: https://go.microsoft.com/fwlink/?LinkID=747853.
+3. Run `LxRunOffline /install` or use other arguments you need to be passed to `LxRun.exe`.
+4. Enter the paths of the two files you downloaded when prompted. (**Note: You should use absolute paths, relative ones are not supported**)
+5. Complete the installation.
+
+# How it works
+`LxRun.exe` uses `InternetOpenUrl()` in `wininet.dll` to download the files required. This application uses [EasyHook](https://easyhook.github.io) to inject code to its process and hooks this function and some others related. Then the download requests can be redirected to local files.