awk 'NR % 2 == 1' // every 2nd line
awk 'NR % 10 == 1' // every 10th line
awk 'NR % 100 == 1' // every 100th line
NR ordinal number of the current record<br/ > <br/ > X == 1 keeps the first line intact, whereas X == 0 would remove the first line. Important for CSV files.
tar -vcf target.tar source
v → verbose
c → create
f → file. word followed by f will be name of archive, f needs to be last in the command.
ssh -i ~/.ssh/path_to_key username@serverA site that was developed some years ago with Wordpress 4.x and ACF 4.x got moved to a new server. During the migration process, Wordpress and the Plug-ins were updated to their latest version - I assume, before the MySQL DB got migrated, which let to the following complaint:
After some detective work, I realise that the data was still present. ACF v4.x was storing the ACF data in wp_options, ACF v5.x is storing it in wp_termmeta.
Which is great, because all that is needed, is to update the DB! But how to do it?
Didn't work as expected.
In the wp_options, the acf_version is set to the current WP version, 5.7.6 in this case. Setting it to 4.4.12, triggered the ACF DB update script, the ACF data got migrated to wp_termmeta, the site is working again as expected.
Shout out to the ACF Support Pages for solving the last piece of the puzzle.
301 Redirect is great, if you want to keep you old structure and only change the server.
.htaccess
Redirect 301 / https://www.trembl.org/Any page of your old.site/about would get redirected to https://www.trembl.org/about.
If you want to redirect all your page links from your old.site (e.g. old.site, old.site/aaa, old.site/bbb, ...) to https://www.trembl.org, use this RewriteRule:<
.htaccess
RewriteEngine On
RewriteRule ^(.*)$ https://www.trembl.org/ [R=301]Set Levels by Value
x$name <- factor(x$name, levels = x$name[order(x$val)])
Set Levels by Name, Reverse Name Vector, first Name on top
df$name <- factor(df$name, levels = rev(df$name))
TODO:
Source: https://rstudio-pubs-static.s3.amazonaws.com/7433_4537ea5073dc4162950abb715f513469.html
Problem:
‘std::runtime_error’ what(): locale::facet::_S_create_c_locale name not valid Aborted
Solution:
export LC_ALL="en_US.UTF-8"
via http://martinhjelm.github.io/2015/06/14/Runtime-error-when-sshing-from-OSX-to-Ubuntu/
$l = get_nav_menu_locations();
$m = wp_get_nav_menu_items($l['footer-menu']);
foreach($m as $i) {
// $i->url;
// $i->title;
}
// update_option('siteurl','http://127.0.0.1/my-site');
// update_option('home','http://127.0.0.1/my-site');
// add excerpts to pages add_post_type_support('page', 'excerpt');
// remove auto-p in blog content remove_filter('the_content', 'wpautop');
// replace \n with <br />
// substitute
for line breaks in the content
function addLineBreaks($content) {
return str_replace("\n", "\n<br />", $content);
}
add_filter('the_content', 'addLineBreaks');
// register menu function register_theme_menu() { register_nav_menu('footer-menu', 'Footer Menu'); } add_action('init', 'register_theme_menu');
functions.php
function register_theme_menu() {
register_nav_menu('my-menu', 'My Menu');
}
add_action( 'init', 'register_theme_menu' );
Menu Location
$l = get_nav_menu_locations();
$m = wp_get_nav_menu_items($l['my-menu']);
foreach($m as $i) {
// custom HTML
echo $i->url;
echo $i->title;
}