First you have to add them:
add_filter('manage_posts_columns', 'add_new_columns');
function add_new_columns($columns) {
$columns['thumb'] = __('Thumb');
return $columns;
}

…etc.

Then you populate them (in my case, add post type to any column named ‘thumb’):
add_action( 'manage_posts_custom_column', 'manage_columns' );
function manage_columns($column_name, $post_id) {
switch ($column_name) {
case 'thumb':
if(has_post_thumbnail($post_id)){
echo get_the_post_thumbnail($post_id,array(50,50));
}else{
echo 'No Featured Image';
}
break;
default:
break;
}
}

This is what got me

If your post types are hierarchical, then WordPress considers them ‘pages’. If that is the case you have to use:

add_action( 'manage_pages_custom_column', 'manage_columns' );

This will add the action to all hierarchical post types (pages) instead of all non-hierarchical post types (posts). If you want to target your custom post types only, hierarchical or not, you can do so using:

add_action( 'manage_{custom-post-type}_posts_custom_column', 'manage_columns' );

I know we are moving fast, so… a quick rundown:

Global non-hierarchical post types (posts) use:
add_action( 'manage_posts_custom_column', 'manage_columns' );

Global hierarchical post types (pages) use:
add_action( 'manage_pages_custom_column', 'manage_columns' );

Specific post types hierarchical or non-hierarchical (custom post types) use:
add_action( 'manage_{custom-post-type}_posts_custom_column', 'manage_columns' );

Hope that saves someone a few minutes.

To CHMOD only directories to 755:

find . -type d -exec chmod 755 {} \;

To CHMOD only php files to 644:

find . -type f -name '*.php' -exec chmod 644 {} \;

This worked well to figure out permissions for my local WordPress install. I did have to specficially give my uploads directory write access, but it cleaned up all of the other files and folders.

In terminal:

sudo mate /private/etc/apache2/httpd.conf

Find “<Directory />” block. Make sure it looks like this:

Options FollowSymLinks
AllowOverride All
Order allow,deny
Allow from all

Find “LoadModule rewrite_module libexec/apache2/mod_rewrite.so”
Make sure there isn’t a # in front of it. (If libexec/apache2/mod_rewrite.so is different in your httpd.conf, don’t change it to mine. Apparently this differs across different OS X installs.)

Finally, and this was what took me so long to figure out…
Add the following to the first line of your .htaccess file:

Options +FollowSymLinks

or

In my case, I had a conf file written to /etc/apache2/users/ automatically, so when I found it did:

sudo mate /etc/apache2/users/username.conf

This file for me looks like:

username/Sites/">
Options Indexes FollowSymLinks MultiViews
AllowOverride All
Order allow,deny
Allow from all


Note: Remember to change username to your actual username.

<script type=”text/javascript” charset=”utf-8″>
$(function(){
  jQuery(window).resize(function(){
    jQuery(‘body’).children().each(function(){
      var $this = jQuery(this);
      var $prev = jQuery(this).prevAll().not(‘.skip’).first();
      if($prev.length > 0){
          var newTop = $prev.outerHeight(true) + parseFloat($prev.css(‘top’));
          jQuery(this).css({top:newTop+’px’});
      }
    });
  });
  jQuery(window).trigger(‘resize’);
});
</script>

Check out the demo:
http://www.aaronvanderzwan.com/playground/dynamic_absolutes/index.html

<style>
.copy, .reg {font-size:xx-small;vertical-align:text-top;}
</style>

<script>
$(function(){
var copy = new RegExp(‘\u00a9′,’g');
var reg = new RegExp(‘\u00ae’,'g’);
var newBody = $(‘body’).html().replace(copy, ‘<span class=”copy”>&copy;</span>’).replace(reg, ‘<span class=”reg”>&reg;</span>’);
$(‘body’).html(newBody);
});
</script>

Don’t do it! (yet)

With getting a new Google Wave account, I wanted to forward my Gmail emails to my Google Wave account. I saw that my Google Wave account was [username]@googlewave.com so I figured I could do it. I went into Gmail. Followed Settings > Forward and set up Gmail to pass all of my emails on to google wave.

I left it on for a day or so, and maybe that was my big mistake. I have been getting emails every 20-30 minutes that have been telling me they cannot send my emails to Google Wave, and that they will retry for the next 2 days. They have a subject line of ‘Delivery Status Notification (Failure)’. Obviously I turned off my forwarding, however now, 3 days later, they are still coming in every 20-30 minutes telling me that the email failed.

So moral of the story. Don’t automatically forward your emails to Google Wave (yet!) and also, don’t leave that forward on any longer than you have to. Google Wave is not ready for it yet and it will get REALLY annoying.

1) Turn on Column Browser: View > Show Column Browser
2) Show Albums as well as artists: View > Column Browser > Albums
3) Show Genres as well as albums and artists: View > Column Browser > Genres
4) Setup Column Browser to show up above your song lists: View > Column Browser > On Top