In Grails we can use the list-plugins command to get a list of all available plugins. The list returns only the plugins that are available for the Grails version we are using. So if we invoke this command in Grails 3 we get a different list than a Grails 2.x version. To get more detailed information, like website, source code URL and dependency definition we use the plugin-info command.

Let's run the plugin-list command for Grails 3:

grails> list-plugins
| Available Plugins
* airbrake-grails
* ajax-tags
* asset-pipeline
* audit-logging
* aws-sdk
* cache
* cache-ehcache
* cache-headers
* cassandra
* clojure
* csv
* database-migration
* export
* facebook-sdk
* feature-switch
* feeds
* fields
* geb
* gorm-envers
* grails-console
* grails-hibernate-filter
* grails-http-builder-helper
* grails-json-apis
* grails-redis
* grails-spring-websocket
* greenmail
* grooscript
* gscripting
* hibernate
* jasypt-encryption
* jms
* joda-time
* json-annotations-marshaller
* mail
* mongodb
* newrelic
* oauth
* quartz
* quartz-monitor
* rateable
* recaptcha
* rendering
* request-tracelog
* scaffolding
* segment
* sentry
* simple-spring-security
* spring-security-acl
* spring-security-appinfo
* spring-security-core
* taggable
* views-gradle
* views-json
* views-markup
* wkhtmltopdf

If we want more information about the spring-security-core plugin we invoke the following command:

grails> plugin-inf spring-security-core
| Plugin Info: spring-security-core
| Latest Version: 3.0.0.M1
| All Versions: 3.0.0.M1
| Title: Spring Security Core Plugin

Spring Security Core plugin

* License: APACHE
* Documentation: http://grails-plugins.github.io/grails-spring-security-core/
* Issue Tracker: https://github.com/grails-plugins/grails-spring-security-core/issues
* Source: https://github.com/grails-plugins/grails-spring-security-core
* Definition:

dependencies {
    compile "org.grails.plugins:spring-security-core:3.0.0.M1"
}

If we would invoke the command in for example Grails 2.5.1 we get different results:

grails> list-plugins

Plugins available in the grailsCentral repository are listed below:
-------------------------------------------------------------
DjangoTemplates Plugin<>               --
None                <>               --
acegi               <0.5.3.2>        --  Acegi Plugin
active-link         <1.0>            --  Active Link Tag Plugin
activemq            <0.5>            --  Grails ActiveMQ Plugin
activiti            <5.12.1>         --  Grails Activiti Plugin - Enabled Activiti BPM Suite support for Grails
activiti-shiro      <0.1.1>          --  This plugin integrates Shiro Security to Activiti.
activiti-spring-security<0.5.0>          --  Activiti Spring Security Integration
acts-as-taggable    <>               --
address             <0.2>            --  Grails Address Plugin
address-lookup-zpfour<0.1.2>          --  Address Lookup via ZP4
admin-interface     <0.7.1>          --  Grails Admin Interface
adminlte-ui         <0.1.0>          --  AdminLTE UI Plugin
airbrake            <0.9.4>          --  Airbrake Plugin
ajax-proxy          <0.1.1>          --  Ajax Proxy Plugin
ajax-uploader       <1.1>            --  Ajax Uploader Plugin
ajaxanywhere        <1.0>            --  AjaxAnywhere Grails Plugin
ajaxdependancyselection<0.45-SNAPSHOT4> --  Ajax Dependancy Selection Plugin
ajaxflow            <0.2.4>          --  This plugin enables Ajaxified Webflows
akismet             <0.2>            --  Akismet Anti-Spam Plugin
akka                <2.2.4.1>        --  Akka Integration
alfresco            <0.4>            --  Alfresco DMS Integration

...

Plug-ins you currently have installed are listed below:
-------------------------------------------------------------
asset-pipeline      2.2.3            --  Asset Pipeline Plugin
cache               1.1.8            --  Cache Plugin
database-migration  1.4.0            --  Grails Database Migration Plugin
hibernate4          4.3.10           --  Hibernate 4 for Grails
jquery              1.11.1           --  jQuery for Grails
scaffolding         2.1.2            --  Grails Scaffolding Plugin
tomcat              7.0.55.3         --  Apache Tomcat plugin for Grails
webxml              1.4.1            --  WebXmlConfig

To find more info about plugin type 'grails plugin-info [NAME]'

To install type 'grails install-plugin [NAME] [VERSION]'

For further info visit http://grails.org/Plugins
grails> plugin-info spring-security-core

--------------------------------------------------------------------------
Information about Grails plugin
--------------------------------------------------------------------------
Name: spring-security-core | Latest release: 2.0-RC5
--------------------------------------------------------------------------
Spring Security Core Plugin
--------------------------------------------------------------------------
Author: Burt Beckwith
--------------------------------------------------------------------------
Author's e-mail: burt@burtbeckwith.com
--------------------------------------------------------------------------
Find more info here: http://grails-plugins.github.io/grails-spring-security-core/
--------------------------------------------------------------------------

Spring Security Core plugin


Dependency Definition
--------------------------------------------------------------------------
    :spring-security-core:2.0-RC5


To get info about specific release of plugin 'grails plugin-info [NAME] [VERSION]'

To get list of all plugins type 'grails list-plugins'

For further info visit http://grails.org/plugins

In Grails versions before Grails 3 we also have the command list-plugin-updates. This command will display if there are any version updates for the plugins installed in our application:

grails> list-plugin-updates

Plugins with available updates are listed below:
-------------------------------------------------------------
 tomcat              7.0.55.3          8.0.22
hibernate4          4.3.10            4.3.8.2-SNAPSHOT
database-migration  1.4.0             1.4.2-SNAPSHOT
cache               1.1.8             1.1.9-SNAPSHOT
asset-pipeline      2.2.3             2.5.1 

Written with Grails 3.0.7.

Original article

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