Bash argument set

Check if a bash argument is set in a script


#!/usr/bin/env bash

if [ ! -z ${1+x} ]; then
    echo "var is set to '$1'";
    echo "var is unset";
fi will output: var is unset TADA will output: var is set to 'TADA'

Nginx change default user

Default nginx runs on the user www, www-data of something alike.

You can change it. Be sure that you are aware of the security risks!
Don’t change it to a user that has access to sudo!

In /etc/nginx/nginx.conf on line #1 change the user.

#user www-data;
user deployment;

And change the user for php-fpm (If you’re using php-fpm 😉)

Create a file in /etc/php/7.2/fpm/pool.d/ (check the php version)
I suggest something like zzz-custom-user.conf so it’s loaded last. To that file add.

user = deployment
group = deployment
listen.owner = deployment = deployment

Next reload everything, agian check php version.

sudo nginx -t && sudo service php7.2-fpm restart && sudo service nginx restart

Finally change the owner of the webfiles

sudo chown pi:pi /var/www/ -R

All done.

Behat functional tests

During WordCamp Rotterdam I worked on a small bug in WP-CLI. A bug I found roughly six months ago.
The bug itself was a one line fix.
I was asked to create functional tests using behat which I didn’t even heard off.

So after checking the handbook and with help of a few others. It resulted in this pull request.
And now we wait.

ACF load user_meta cross WordPress multisite

Users are global in a multisite. And default ACF groups are per site. So if you set a pinterest url for a user on one site it will apply it for all sites. No problem. But if you set an image it will try to find that image-id on each site.

The solution.

Step 1; Limit the user acf groups only to the main site:

function wpstarter_filter_fields_group($result, $rule, $screen) {
    if ( isset( $screen['user_id'] ) && ! is_main_site() )
        return false;

    return $result;
add_filter('acf/location/rule_match', 'wpstarter_filter_fields_group', 10, 3);

Step 2; Get image fields for users only from the main site:

function wpstarter_load_avatar_value_cros_site( $value, $post_id, $field ) {

    if( 0 !== strpos( $post_id, 'user_' ) || is_main_site() ) {
        return $value;

    switch_to_blog( get_main_site_id() );

    $value_of_main_site = acf_get_value($post_id, $field);
    $value              = acf_format_value($value_of_main_site, $post_id, $field);

    return $value;
add_filter( 'acf/format_value/type=image', 'wpstarter_load_avatar_value_cros_site', 11, 3);