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CLI for WordPress
an introduction
Hollywood WordPress Meetup
Mike Schroder (DH-Shredder)
@GetSource - http://www.getsource.net
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Who Am I?
• Mike Schroder, a.k.a DH-Shredder, a.k.a. @GetSource
• Third Culture Kid, enjoy Coffee & Sailing
• WordPress Core and wp-cli Contributor
• Happy DreamHost Employee
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There are two groups
of people.
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Those who use the
command line
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Those who are going to use
the command line
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Don’t be afraid of the CLI.
It’s your friend.
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Oh, you like the CLI?
wp-cli will make your life better.
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Command Line Interface:
A direct, text-based, interface
to a computer.
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A direct, text-based,
interface to your server.
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At your host, you’ll see this
referred to as SSH.
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Perform operations directly
on your server.
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Why would I use the CLI?
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Efficiency!
Get things done faster.
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Copying a WordPress
install in SFTP?
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~5 Minutes+
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Copying a WordPress
install in SSH?
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~10 Seconds
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What else can I do?
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Deploy your site.
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On-server file editing.
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Plugin and theme
installation or updates.
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Commands and Arguments
$ cmd [optional arg]
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Windows Instructions:
- Install Putty: http://bit.ly/y99vUd
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Mac Instructions:
Open Terminal, then:
$ ssh [user@]
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What are some basic
commands?
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List files
$ ls [-a] [location]
-a for all files, including hidden
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Change directory
$ cd
Use ~ for home.
../ to go up a directory.
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Copy files
$ cp [-r]
-r copies recursively.
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Remove files
$ rm [-r]
-r removes recursively.
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Move files or directories
$ mv
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Download files
$ wget
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Unzip files
$ unzip
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WordPress specific CLI
operations: WP-CLI
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Super-cool Open Source tool
to manage WordPress
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Headed up by
Cristi Burcă (scribu) and
Andreas Creten
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Uses WordPress itself to
perform operations
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Automation!
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What can I do with it?
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No, Really.
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Update WordPress
$ wp core update
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Install a Theme
$ wp theme install
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Change Theme
$ wp theme activate
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Backup your Database
$ wp db export [filename]
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Update Plugins
$ wp plugin update-all
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Update Themes
$ wp theme update-all
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What do I need to run it?
• SSH access to your WordPress install's directory
• PHP 5.3+
• WordPress 3.3+
• Enough RAM for shell processes to run WordPress
• Easiest on Linux & MacOS
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Okay. Got that covered.
How can I get this
Awesomeness?
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Install WP-CLI
Full Instructions at http://wp-cli.org
In short, from the root of your user:
curl http://wp-cli.org/installer.sh | bash
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If you’re local and have sudo:
sudo utils/dev-build
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Otherwise, add an alias
(.bashrc/.bash_profile)
alias wp='/home/user/wp-cli/src/bin/wp';
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In ~/.bash_profile:
if [ -f ~/.bashrc ]; then
source ~/.bashrc
fi
(http://www.joshstaiger.org/archives/2005/07/bash_profile_vs.html)
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You’ve got it installed?
Let’s dig deeper.
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WP-CLI is extensible.
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Add your own directly
wp-cli/php/commands/community/cmd_name.php
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Or, define in your plugins.
if ( defined('WP_CLI') && WP_CLI ) {
! include( PLUGIN_DIR . '/lib/wp-cli.php' );
}
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Sample Backup Plugin:
http://getsource.net/2012/10/wp-cli-awesomeness-in-vancouver
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This is just a start.
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Resources!
• http://wp-cli.org
• http://files.fosswire.com/2007/08/fwunixref.pdf
• http://getsource.net/2012/10/wp-cli-awesomeness-in-vancouver/
• http://wp.tutsplus.com/tutorials/using-wp-cli-for-fun-and-profit/
• http://halfelf.org/2012/command-line-wp/
• http://www.joshstaiger.org/archives/2005/07/bash_profile_vs.html
Mike Schroder (DH-Shredder)
@GetSource - http://www.getsource.net