Deactivate WordPress - CaptainCore

Injects mu-plugin deactivate-wp.php which turns off front end of WordPress. Customize header, description and message variables at the top before running.

header="Website Deactivated"
description="This website is no longer active."
message="Site owners contact <a href=\"https://<link-to-business>\">Business Name</a>"
wp_content=""

if [[ "$wp_content" == "" ]]; then
	wp_content="wp-content"
fi

if [ -f "${wp_content}/mu-plugins/deactivate-wp.php" ]; then
    echo "Removing ${wp_content}/mu-plugins/deactivate-wp.php"
    rm "${wp_content}/mu-plugins/deactivate-wp.php"
fi

# Must use WordPress deactivate plugin
cat <<EOF > deactivate-wp.php
<?php

function deactivate_wp_template_redirect() { ?><html>
  <head>
	<meta charset="utf-8">
	<title>${header}</title>

	<!-- Compiled and minified CSS -->
	<link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
	<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/css/materialize.min.css">

	<!-- Compiled and minified JavaScript -->
	<script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/js/materialize.min.js"></script>

	<style>
		@import url('https://fonts.googleapis.com/css?family=Roboto');
		body {
			text-align: center;
			margin: 10% auto;
			padding: 0%;
			font-family: 'Roboto', sans-serif;
			overflow: hidden;
			display: block;
			max-width: 450px;
			background: #eeeeee;
		}
		p {
		  margin-top: 3%;
		  line-height: 1.4em;
		  display: block;
		}
		img {
		  margin-top: 1%;
		}
		a {
			color:#27c3f3;
		}
	</style>
  </head>
  <body>
	<div class="row">
	<div class="col s12">
	  <div class="card">
		<div class="card-content">
			<span class="card-title">${header}</span>
			<p>${description}</p>
		</div>
		<div class="card-content grey lighten-4">
			<p>${message}</p>
		</div>
	  </div>
	</div>
  </div>
  </body>
</html>
<?php
  die();
}
add_action( 'template_redirect', 'deactivate_wp_template_redirect' );
EOF

mv deactivate-wp.php $wp_content/mu-plugins/
home=$( wp option get home )
echo "Generated $wp_content/mu-plugins/deactivate-wp.php on $home"
wp cache flush
if [ -f "${wp_content}/mu-plugins/kinsta-mu-plugins.php" ]; then
	wp kinsta cache purge --all --skip-themes
fi

To re-enable simply remove the mu-plugin.

rm wp-content/mu-plugins/deactivate-wp.php