One small annoyance is that it doesn't like multi-line entry. It treats every hit of the enter key as "plz run the codez" - so, at the end of this blog post, I've put the commands in copy-n-paste format.

Once you've installed WP CLIP, go to the command line and run wp shell. You'll be greeted with an interactive prompt wp>

Method One - Quick Search

This command constructs a query which gets all posts, which have been published, where there is no thumbnail ID. Note - this isn't quite the same as not having a featured image.

$args = array(
    'post_type'     => 'post',
    'post_status'   => array('publish'),
    'posts_per_page'=> -1,
    'meta_query'    => array(
        array(
            'key' => '_thumbnail_id',
            'compare' => 'NOT EXISTS'
        )
    ),
);

Next we run that query. It will dump quite a lot of information into the screen, we'll format it shortly.

$query = new WP_Query( $args );

Finally, we loop through all the posts the query has found and print them out in a nice format.

$posts = $query->posts;
foreach ( $posts as $post ) {
    echo $post->post_date . " " . $post->guid . " " . $post->post_title . "\n";
}

That will give you the date, link, and title of every post where there is no featured image set.

Copy and Paste Snippet

$args = array( 'post_type' => 'post', 'post_status' => array('publish'), 'posts_per_page'=> -1,  'meta_query' => array(       array( 'key' => '_thumbnail_id', 'value' => '?', 'compare' => 'NOT EXISTS' ) ),);
$query = new WP_Query( $args );
$posts = $query->posts;
foreach ( $posts as $post ) { echo $post->post_date . " " . $post->guid . " " . $post->post_title . "\n"; }

Method Two - Full Search

Sometimes the WordPress database can get a little confused. It will say there is a post thumbnail, but when you try to retrieve it, there's nothing there!

This method is slightly slower if you have lots of posts. It goes through every single post and checks whether the featured image can be retrieved. If not it will let you know.

$args = array(
    'post_type'     => 'post',
    'post_status'   => array('publish'),
    'posts_per_page'=> -1,
);

$posts = get_posts( $args );

foreach ( $posts => $post) {
    if( get_the_post_thumbnail( $post ) == "" ) {
        echo $post->post_date . " " . $post->guid . " " . $post->post_title . "\n"; }
}

Copy and Paste Snippet

foreach (get_posts( array( 'post_type' => 'post', 'post_status' => array('publish'), 'posts_per_page' => -1,) ) as $post) { if(get_the_post_thumbnail($post)== "") { echo $post->post_date . " " . $post->guid . " " . $post->post_title . "\n"; } }

That said, I find music with lyrics particularly problematic as my brain prefers to concentrate on the words rather than the task in hand.

On long flights, I often use a white noise generator to drown out sound.

I've recently started listening to random music. A simple command line script to generate a highly synthetic / chiptune / glitchnoise neverending piece of music.

This code is shamelessly ripped off from Robert Elder's blog post and the subsequent HackerNews discussion

cat /dev/urandom | \
   hexdump -v -e '/1 "%u\n"' | \
   awk '{ split("0,3,5,6,7,10,12",a,","); \
   for (i = 0; i < 1; i+= 0.0001) \
   printf("%08X\n", 100*sin(1382*exp((a[$1 % 8]/12)*log(2))*i)) }' | \
   xxd -r -p | \
   aplay -c 2 -f S32_LE -r 24000

Copy & paste that into your Ubuntu terminal and it should sound something like this:

I don't know enough music theory or maths to determine what will sound pleasant and what won't. But a little bit of fiddling got me this jaunty little number:

cat /dev/urandom | \
   hexdump -v -e '/1 "%u\n"' | \
   awk '{ split("0,1,2,4,8",a,","); \
   for (i = 0; i < 1; i+= 0.0001) \
   printf("%08X\n", 100*sin(1382*exp((a[$1 % 8]/12)*log(2))*i)) }' | \
   xxd -r -p | \
   aplay -c 2 -f S32_LE -r 30000

It's not quite up to the standards of Daft Punk - but it covers up the noise of the office and allows me to concentrate without (audible) distraction.