var fs = require('fs');
function doStuff (path){
    fs.readFile(path, function(err, text){
        if(err){
            console.error(err);
            return;
        }
        var splitted = text.toString().split(process.platform === 'win32' ? '\r\n' : '\n');
        var handler = function(){
            var str = splitted.shift();
            if(str && str !== ''){
                console.log(str);
                setTimeout(handler, 1000);
            }
        };
        handler();
    });
}
doStuff('./file.txt');