streams/readable

25.js

var fs = require('fs');
var path = process.argv[2];

var readableStream = fs.createReadStream(path);

readableStream.setEncoding('utf8');

readableStream.on('data', function(data) {
  console.log('>', data);
});

readableStream.on('end', function() {
  console.log('-- eof');
});