Wordpress Automated Themes, Plugins & Core Updates - Bash Script - Run as Cron Job

wp-update.sh

#!/bin/bash

# This script is designed to update WordPress core, plugins, and themes,
# set correct file permissions, and restart Nginx and PHP-FPM services.
# Update www-data user to the filesystem user of WP.
# !IMP: Make sure WP CLI is installed: https://wp-cli.org/
#
# Original script concept by https://github.com/ph33nx
#
# To schedule this script to run every Thursday at 4 AM, add the following line to your crontab:
# 0 4 * * 4 bash /root/wp-update.sh >> /root/wp-update.log 2>&1
#
# Make sure to replace "/path/to/your/wp-update.sh" with the actual path to this script.
# You can edit your crontab by running: sudo crontab -e

# Define the base directory. This folder has all your websites.
BASE_DIR="/usr/share/nginx/php/wordpress/"

# Ensure the script is running as root
if [ "$(id -u)" != "0" ]; then
   echo "This script must be run as root" 1>&2
   exit 1
fi

# Check for wp-cli.phar existence in the system
if ! command -v wp &> /dev/null; then
    echo "WP-CLI could not be found. Please install it first."
    exit 1
fi

# Loop through each WordPress directory
for dir in $BASE_DIR*; do
  if [ -d "$dir" ] && [ -f "$dir/wp-config.php" ]; then
    echo "Updating WordPress in $dir"

    # Run the wp-cli commands as the www-data user to avoid permission issues
    sudo -u www-data wp --path="$dir" core update
    sudo -u www-data wp --path="$dir" plugin update --all
    sudo -u www-data wp --path="$dir" theme update --all
    sudo -u www-data wp --path="$dir" core update-db
    sudo -u www-data wp --path="$dir" wc update
    
    # Clear WP cache
    sudo -u www-data wp --path="$dir" autoptimize clear
    sudo -u www-data wp --path="$dir" fastest-cache clear all and minified
    sudo -u www-data wp --path="$dir" cache flush

    # Set correct permissions for files and directories
    find "$dir" -type f -exec chmod 644 {} \;
    find "$dir" -type d -exec chmod 755 {} \;
    chown -R www-data:www-data "$dir"
  else
    echo "Skipping $dir, no valid WordPress installation found."
  fi
done

# Clearing Nginx cache
echo "Clearing Nginx cache..."
rm -rf /etc/nginx/cache/*

# Restarting services
echo "Restarting Nginx and PHP-FPM services..."
systemctl restart nginx
systemctl restart php8.2-fpm

echo "Updates and maintenance tasks completed."