Multiple Download Command Line

JavaScript command line application for downloading file in multiple requests

Getting Started

To setup all node dependencies and build run (requires node package manager): npm install -g

Now you can run the script by running: multi-download [OPTIONS] <url>

On Windows there may be some problems with running the above command, due to Windows paths, run the following node multi-download.js [OPTIONS] <url> from a directory with the multi-download.js file.

Usage

$ multi-download

  Usage: multi-download [options] <url>


  Options:

    -p, --parallel                 Download chunks in parallel instead of sequentially
    -o, --overwrite <destination>  Write to custom destination file instead of default
    -h, --help                     output usage information

<url> is the source url to download from, it is required for execution. Also running multi-download with no arguments will also output help.

Open-Source Libraries

async: (https://github.com/caolan/async)

Used primarily for the async.map() method, which allows for parallel execution of asynchronous calls. Also made it easier to piece together the file chunks downloaded from the parallel requests, since it keeps the order of the original array in the map() method.

commander: https://www.npmjs.com/package/commander

Used to handle command line arguments.

synchronize: http://alexeypetrushin.github.io/synchronize/docs/index.html

Used await() and defer() from this library to execute asynchronous requests synchronously, and make code easier to read.