text: var fs = require('fs');
  var file = process.argv[2] || __filename
  
  fs.open(file, 'r', function opened(err, fd) {
    if (err) { throw err }
  
    var buffer = new Buffer(1024),
        length = buffer.length,
        filePosition = parseInt(process.argv[3] || 100, 10);
  
    fs.read(fd, buffer, 0, length, filePosition, function read(err, bytes) {
        if (err) throw err;
        console.log('just read ' + bytes + ' bytes');
        if (bytes > 0) {
          console.log(buffer.slice(0, bytes).toString());
        }
      }
    );
  });