Quick play with nodejs fs module

artistAlbumsToMarkdown.js

var fs = require('fs');
var _ = require('underscore')._;

var artists = [{
    name: 'Raphaeel Saadiq',
    album: [
        'Instant Vintage'
    ]
}, {
    name: 'Dr Dre',
    album: [
        'The Chronic'
    ]
}];

var getHeadlineString = function(name) {
    var k = "=";
    var string = "";
    length = name.length;

    for (var i = 0; i < (length+2); i++) {
        string += k;
    };

    return string;
}

var artistAlbumsToMarkdown = function() {
    fs.readdir('discographies', function(error) {
        if (error) {
            fs.mkdir('discographies', function() {
                artistAlbumsToMarkdown();
            });
        } else {
            var fileContent = "";
            _.each(artists, function(artist, index) {
                var artistString = "";
                artistString += artist.name + "\n" + getHeadlineString(artist.name) + "\n";

                _.each(artist.album, function(album, index) {
                    var count = (index+1);
                    var albumString = "\n" + count + " - " + album;
                    artistString += albumString;
                });

                artistString += "\n\n---\n\n";
                fileContent += artistString;
            });

            var artistNames = _.pluck(artists, 'name').join('_');
            var file = "discographies/" + artistNames + ".md";
            fs.appendFile(file, fileContent);
        }
    });
}
artistAlbumsToMarkdown();