$ npm install favicon-downloader-cli --g

$ favdownload --help

  a cli to download favicon of any site

  Usage
    $ favdownload <url> [--path] [--name]
  Options
    --path         Path to download the favicon
    --name         Name for favicon file downloaded
  Examples
    $ favdownload https://theanubhav.com
    $ favdownload https://devtips.theanubhav.com --name favicon.ico
    $ favdownload https://about.theanubhav.com --name favicon.ico  --path /a/ico