Book Image

Drush User's Guide

By : Juan Pablo Novillo Requena
Book Image

Drush User's Guide

By: Juan Pablo Novillo Requena

Overview of this book

<p>Drush is a command line interface for Drupal. Most of the tasks for building and maintaining a website are repetitive and involve filling in forms on administration pages. The majority of these tasks can be achieved with a single Drush command, shortening the development and maintenance time of a project drastically.</p> <p><em>Drush User's Guide</em> will allow you to be more productive and efficient in building and maintaining your Drupal sites through the command line. You will learn to install Drush on different platforms, and manage and configure your Drupal site by learning how to use and create Drush commands.</p> <p>Become a Drush expert by exploring its command toolkit; customizing it to suit your needs, and extending it with contributed modules.</p> <p>The command line will allow you to download, enable and upgrade Drupal projects in seconds. Back up your files, code and data in one single file, clear the cache, interact with databases, and deploy sites to remote machines - all using simply the command line. Use Drush with your own commands or alter existing ones; and extend the toolkit with a long list of contributed modules.</p> <p><em>Drush User's Guide</em> has everything you need to extend your use of the command line to easily build and manage your Drupal sites.</p>
Table of Contents (10 chapters)

Monitoring watchdog messages (watchdog-X)


The watchdog-x commands allow us to list, view, and delete messages from the database log (visible at Admin | Reports | Recent Log Messages). Here is a description of each command:

  • watchdog-list presents an interactive screen to list messages of a particular type or severity level

  • watchdog-show prints all details of a particular message ID or lists latest messages based on several filtering options

  • watchdog-delete is used to delete messages from the watchdog table. It also has filtering capabilities

Let's go through an example to explain these three commands. Imagine that we are facing an unexpected behavior with our implementation of hook_user_insert during user registration. At some point of the flow in our custom module, we have added the following watchdog call in order to verify something:

watchdog('custom_module', 'gotcha!');

After registering as a new user in our website, we can print the latest messages to see our output:

$ cd /home...