Read a text file and log to console in 140 character chunks, maintaining whole words. In NodeJS; requires the "line-by-line" module.

140.js

var fs = require('fs');
var lbl = require('line-by-line'),
    lr = new lbl('ulysses.txt');

var buffer = '';

function flatten(arr) {
  var result = [];
  result = result.concat.apply(result, arr);
  return result;
}

lr.on('error', function (err) {
    // 'err' contains error object
    console.log('Error!', err);
});

lr.on('line', function (line) {
    // pause emitting of lines...
    lr.pause();

    // ...do your asynchronous line processing..
    var tweet = '';
    buffer += ' ' + line;
    if (buffer.length > 140) {
      tweet = buffer.substr(0,140).replace(/\s\w+$/,'').trim();
      buffer = buffer.replace(tweet,'');
    }

    console.log(tweet);

    setTimeout(function () {
        // ...and continue emitting lines every 2 minutes
        lr.resume();
    }, 1000 * 60 * 2);
});

lr.on('end', function () {
    // All lines are read, file is closed now.
});