You will find this post in your _posts directory. Go ahead and edit it and re-build the site to see your changes. You can rebuild the site in many different ways, but the most common way is to run jekyll serve, which launches a web server and auto-regenerates your site when a file is updated.

To add new posts, simply add a file in the _posts directory that follows the convention YYYY-MM-DD-name-of-post.ext and includes the necessary front matter. Take a look at the source for this post to get an idea about how it works.

Jekyll also offers powerful support for code snippets:

def print_hi(name)
  puts "Hi, #{name}"
end
print_hi('Tom')
#=> prints 'Hi, Tom' to STDOUT.
#!/usr/bin/php
<?php
require __DIR__ . '/MHoC_Config.php';
require __DIR__ . '/createVlanPortTabe.php';
print_r(posix_uname()) . PHP_EOL;
echo 'User : ' . $_SERVER['USERNAME'] . PHP_EOL;
echo 'Host : ' . gethostname() . PHP_EOL;
echo exec('lsb_release -s -d') . PHP_EOL;
echo 'MySQL : ' . exec('mysql --version') . PHP_EOL;
echo 'PHP Version: ' . phpversion().PHP_EOL;
echo 'This file [' . pathinfo(__FILE__,PATHINFO_BASENAME) . '] now running as process ID: ' . getmypid(). PHP_EOL;
echo "=======================================================\n";

function checkMetadata($metadata,$videoDetails){
	if (intval($metadata['seasonnumber']) != $videoDetails['SeasonNumber']) {
		echo 'Season metadata for ' . pathinfo($videoDetails['SourceFile'],PATHINFO_FILENAME) . " is incorrect\nMetadata=" . $metadata['seasonnumber'] . ' Video=' . $videoDetails['SeasonNumber'] . "\n";
	}
	if ($metadata['episodenumber'] != $videoDetails['EpisodeNumber']) {
		echo 'Episode metadata for ' . pathinfo($videoDetails['SourceFile'],PATHINFO_FILENAME) . " is incorrect\nMetadata=" . $metadata['episodenumber'] . ' Video=' . $videoDetails['EpisodeNumber'] . "\n";
	}
	if ($metadata['episodenumber'] != $videoDetails['LastEpisodeNumber'] AND $videoDetails['EpisodeNumber'] != $videoDetails['LastEpisodeNumber']) {
		echo 'MULTI episode video: ' . pathinfo($videoDetails['SourceFile'],PATHINFO_FILENAME) . "\nMetadata=" . $metadata['episodenumber'] . ' Video=' . $videoDetails['EpisodeNumber'] . '-' . $videoDetails['LastEpisodeNumber'] . "\n";
	}
}
echo PHP_EOL . pathinfo(__FILE__,PATHINFO_BASENAME)  . ' has completed!' . PHP_EOL;
?>

Check out the Jekyll docs for more info on how to get the most out of Jekyll. File all bugs/feature requests at Jekyll’s GitHub repo. If you have questions, you can ask them on Jekyll Talk. Check rouge at github for a list of syntax highlight languages.