npm install -g serve

 npm install -g serve ,得到的可执行文件serve就是一个fileserver程序。

 serve -h

  serve - Static file serving and directory listing

  USAGE

    $ serve --help
    $ serve --version
    $ serve folder_name
    $ serve [-l listen_uri [-l ...]] [directory]

    By default, serve will listen on 0.0.0.0:3000 and serve the
    current working directory on that address.

    Specifying a single --listen argument will overwrite the default, not supplement it.

  OPTIONS

    --help                              Shows this help message

    -v, --version                       Displays the current version of serve

    -l, --listen listen_uri             Specify a URI endpoint on which to listen (see below) -
                                        more than one may be specified to listen in multiple places

    -p                                  Specify custom port

    -s, --single                        Rewrite all not-found requests to `index.html`

    -d, --debug                         Show debugging information

    -c, --config                        Specify custom path to `serve.json`

    -L, --no-request-logging            Do not log any request information to the console.

    -C, --cors                          Enable CORS, sets `Access-Control-Allow-Origin` to `*`

    -n, --no-clipboard                  Do not copy the local address to the clipboard

    -u, --no-compression                Do not compress files

    --no-etag                           Send `Last-Modified` header instead of `ETag`

    -S, --symlinks                      Resolve symlinks instead of showing 404 errors

    --ssl-cert                          Optional path to an SSL/TLS certificate to serve with HTTPS
                                        Supported formats: PEM (default) and PKCS12 (PFX)

    --ssl-key                           Optional path to the SSL/TLS certificate's private key
                                        Applicable only for PEM certificates

    --ssl-pass                          Optional path to the SSL/TLS certificate's passphrase

    --no-port-switching                 Do not open a port other than the one specified when it's taken.

  ENDPOINTS

    Listen endpoints (specified by the --listen or -l options above) instruct serve
    to listen on one or more interfaces/ports, UNIX domain sockets, or Windows named pipes.

    For TCP ports on hostname "localhost":

      $ serve -l 1234

    For TCP (traditional host/port) endpoints:

      $ serve -l tcp://hostname:1234

    For UNIX domain socket endpoints:

      $ serve -l unix:/path/to/socket.sock

    For Windows named pipe endpoints:

      $ serve -l pipe:\\.\pipe\PipeName