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Understanding and installing Drush

From: Drupal 7 Advanced Training

Video: Understanding and installing Drush

I have a secret to tell you. Full-time Drupal site builders don't use Drupal the way I've shown you throughout all my lynda.com courses, pointing and clicking their ways through configuration screens. In fact, they often don't use a web browser at all until the very end. Instead, they use a command-line tool called Drush. This isn't a module. Instead, it's something that interacts with UNIX or the command line through windows. I'll show you how to use Drush throughout this section of the course by using it to install a new Drupal web site.

Understanding and installing Drush

I have a secret to tell you. Full-time Drupal site builders don't use Drupal the way I've shown you throughout all my lynda.com courses, pointing and clicking their ways through configuration screens. In fact, they often don't use a web browser at all until the very end. Instead, they use a command-line tool called Drush. This isn't a module. Instead, it's something that interacts with UNIX or the command line through windows. I'll show you how to use Drush throughout this section of the course by using it to install a new Drupal web site.

But first we have to install Drush itself. We go to drupal.org/project/drush. Before downloading it, I just want to show that there is a lot of documentation for Drush. It's a very well-supported module. The main site is drush.org. We chose a bunch of commands and a FAQ and all sorts of other information. There's also a list of modules that integrate with Drush and this becomes important as you work further and further into your site. There is over a hundred of them as I record this video.

But let's get back to the project. I'll go down, copy this link, and remember because it's not actually a module, I'll go back onto my terminal and into my home directory. I am going to install it somewhere inside there, but outside of Drupal's home directory. So here I am in my home directory and the question is where should I put it? Well, the traditional place is in this bin directory. So I'll go down into there, see what's there, and then I'll get that link and uncompress it.

Now when I list again I see it's there. I can get rid of that .gz file if I want. I can see what Drush actually is by going into that directory and poking around a bit. There is a quite a lot of stuff here. The file that we are actually going to call on is this one here, Drush. The other files really just support that one. That's the main program. I am going to go up again one level. So now we are in bin and we have the drush folder right there.

In order to call up Drush, you say run the program where I am into that drush folder and then call up the program Drush, and then you issue a command. In this case, I will try help. And it works. We basically just get a list of common commands from doing that. Now that whole thing about typing ./ drush/drush and so on and so forth, those paths becomes really, really long and when we were in your web site's directory and that's where you're going to be running Drush commands usually. So going to invoke a little trick to tell UNIX to always look for this directory for commands.

It's something called an Environment Variable. There are several ways to set them, and I'll only use the techniques specific to my web host's version of UNIX. To see more, watch the section Configuring Your Working Environment in the lynda.com course UNIX for Mac OS X users. First, I'll get out of this command by hitting Ctrl+C, and I'll go back to my home directory by something typing cd. In my home directory is something called bashrc, bash resource, and it's a hidden file, so it starts with a dot.

I am going to edit that and add a line of text that will tell my UNIX system to always look in that directory. So nano. bashrc, go down under User specific aliases and functions and add this line, and then I save it. Basically, what I'm saying is take the current places that you look for such commands and add this to the end of it.

And yes, I want to save that. Then to make that effective I'll clear the screen and type source .bashrc. Now we can see if that works by simply typing drush help, where we are, and remember we're not in that directory anymore. But if what we did is correct, then this should just work, and indeed it does, but will it work from within our Drupal site directory? Let's find out. So here we are again in my home directory and I want to go into webapps and my site is lyndalynda. Yup! There's my Drupal installation.

Let's try drush help again. It worked! I should mention there are actually several ways to install Drush, and in fact you need to follow a very different procedure when installing it on a Windows computer. The details are available on the Drush Project page at drupal.org/project/drush. As we scroll up, you see it fairly near the top here, this Drush installer for Windows. For UNIX, I like the installation procedure you saw here, because it shows the nitty-gritty of how it all works.

When you're comfortable working in a specific environment, however, you will probably want to seek out a procedure that's optimized for your preference and flavor of UNIX. So we have Drush installed, but what can you do with it? I'll show you that in the next video by doing a complete Drupal installation in this folder using only Drush. We won't use the web interface at all except to check out our progress.

Show transcript

This video is part of

Image for Drupal 7 Advanced Training
Drupal 7 Advanced Training

72 video lessons · 11555 viewers

Tom Geller
Author

 
Expand all | Collapse all
  1. 4m 51s
    1. Welcome
      1m 7s
    2. Planning your Drupal career
      3m 44s
  2. 25m 46s
    1. Comparing development and production environments
      6m 22s
    2. Configuring your settings.php file
      7m 10s
    3. Running multiple sites from one Drupal installation
      7m 32s
    4. Troubleshooting common issues
      4m 42s
  3. 51m 20s
    1. Understanding your Drupal site's place on the web
      2m 44s
    2. Selecting a web host
      7m 20s
    3. Using Unix's command-line interface
      8m 23s
    4. Working with your web host's access restrictions
      4m 51s
    5. Using cPanel and other graphical web host interfaces
      3m 40s
    6. Transferring files to and from your web host
      5m 49s
    7. Moving databases using phpMyAdmin
      6m 34s
    8. Moving databases using Unix commands
      6m 8s
    9. Modifying server configuration files
      5m 51s
  4. 27m 10s
    1. Learning from case studies
      3m 13s
    2. Planning your site
      4m 18s
    3. Populating your site with Devel Generate
      3m 42s
    4. Managing URL paths
      3m 20s
    5. Restricting access to downloadable files
      5m 55s
    6. Reusing site components with the Features module
      6m 42s
  5. 21m 53s
    1. Understanding and installing Drush
      5m 23s
    2. Installing Drupal using Drush
      7m 24s
    3. Building a site using Drush
      9m 6s
  6. 31m 59s
    1. Backing up with the Backup and Migrate module
      8m 17s
    2. Moderating comment spam
      6m 47s
    3. Migrating from Drupal 6
      4m 28s
    4. Migrating to Drupal 7
      12m 27s
  7. 22m 24s
    1. Letting users log in through OpenID
      5m 10s
    2. Letting users log in through Facebook, Twitter, and other services
      9m 43s
    3. Republishing posts on Facebook and Twitter
      7m 31s
  8. 1h 5m
    1. Understanding Drupal's base themes
      5m 55s
    2. Introducing base themes: Zen and subtheming
      11m 35s
    3. Introducing base themes: Fusion and extensibility
      10m 44s
    4. Introducing base themes: AdaptiveTheme and responsive design
      7m 25s
    5. Introducing base themes: Omega and mobile devices
      7m 9s
    6. Using Firebug and other theming tools
      7m 20s
    7. Modifying themes with Sweaver
      6m 59s
    8. Modifying themes with Livethemer
      8m 45s
  9. 49m 35s
    1. Understanding the Rules module
      6m 48s
    2. Demonstrating how Rules works in Drupal Commerce
      3m 53s
    3. Creating practical rules
      6m 37s
    4. Improving rules
      9m 10s
    5. Defining conditions with the Context module
      7m 51s
    6. Varying layout with the Context and Delta modules
      5m 0s
    7. Varying layout with the Panels module
      10m 16s
  10. 52m 46s
    1. Enabling social features
      9m 46s
    2. Implementing a voting system
      9m 15s
    3. Rewarding good behavior with the Userpoints module
      5m 57s
    4. Setting up Organic Groups
      6m 28s
    5. Adding content to groups
      2m 21s
    6. Seeing group activity better with views and panels
      10m 13s
    7. Making groups private
      4m 54s
    8. Letting each group have its own permissions
      3m 52s
  11. 25m 32s
    1. Understanding packaged Drupal distributions
      2m 8s
    2. Getting a head start with Acquia Drupal
      7m 28s
    3. Creating online storefronts with Drupal Commerce
      6m 53s
    4. Creating government web sites with OpenPublic
      9m 3s
  12. 1h 30m
    1. Taking the assignment
      3m 26s
    2. Planning the project
      3m 43s
    3. Preparing the infrastructure
      8m 42s
    4. Starting the design
      7m 35s
    5. Filling in the content
      7m 29s
    6. Developing the layout
      10m 27s
    7. Finishing the layout
      7m 8s
    8. Refining the CSS
      6m 32s
    9. Setting up sections for regional offices
      4m 53s
    10. Configuring regional offices
      7m 18s
    11. Connecting to social media
      5m 9s
    12. Cleaning up
      12m 32s
    13. Securing the site
      5m 56s
  13. 37s
    1. Next steps
      37s

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