text: /*
  
  Write a program that uses a single synchronous filesystem operation to
  read a file and print the number of newlines it contains to the
  console (stdout), similar to running `cat file | wc -l`.
  
  The full path to the file to read will be provided as the first
  command-line argument.
  
  ----------------------------------------------------------------------
  HINTS:
  
  To perform a filesystem operation you are going to need the `fs`
  module from the Node core library. To load this kind of module, or any
  other "global" module, use the following incantation:
  
    var fs = require('fs')
  
  Now you have the full `fs` module available in a variable named `fs`.
  
  All synchronous (or blocking) filesystem methods in the `fs` module
  end with 'Sync'. To read a file, you'll need to use
  `fs.readFileSync('/path/to/file')`. This method will return a
  `Buffer` object containing the complete contents of the file.
  
  Documentation on the `fs` module can be found by pointing your browser
  here:
    /usr/local/lib/node_modules/learnyounode/node_apidoc/fs.html
  
  `Buffer` objects are Node's way of efficiently representing arbitrary
  arrays of data, whether it be ascii, binary or some other format.
  `Buffer` objects can be converted to strings by simply calling the
  `toString()` method on them. e.g. `var str = buf.toString()`.
  
  Documentation on `Buffer`s can be found by pointing your browser here:
    /usr/local/lib/node_modules/learnyounode/node_apidoc/buffer.html
  
  If you're looking for an easy way to count the number of newlines in a
  string, recall that a JavaScript `String` can be `.split()` into an
  array of substrings and that '\n'. Using this method you'll end up
  with an array that has one more element than the number of newlines.
  
  ----------------------------------------------------------------------
  
  */
  var fs = require('fs'), filename = process.argv[2];
  console.log(fs.readFileSync(filename).toString().split('\n').length - 1);