GVM is a tool for managing parallel Versions of multiple Software Development Kits on any Unix based system. It provides a convenient command line interface for installing, switching, removing and listing Candidates.

See documentation on the GVM Project Page.

Please report any bugs and feature request on the GitHub Issue Tracker.

Questions and discussions at the Nabble Forum.

Open your favourite terminal and enter the following:

$ curl -s api.gvmtool.net | bash

If the environment needs tweaking for GVM to be installed, the installer will prompt you accordingly and ask you to restart.

All GVM's BDD tests are written in Cucumber and can be found under src/test/cucumber/gvm. These can be run with Gradle by running the following command:

$ ./gradlew

Please ensure that the JAVA_HOME environment variable set to JDK 1.7 on your system!

Mac users can add the following line to their ~/.bash_profile file to set this variable:

export JAVA_HOME=$(/usr/libexec/java_home -v1.7)

It is useful to run the server locally for development purposes. Working installations of MongoDB and vert.x are required to get going. GVM can be used to install vert.x, otherwise install it manually as described on the install page.

$ gvm install vertx

Next, install MongoDB as described here. After installing, the database needs to be primed with some data. The following lines may be run with mongod running as a separate process.

$ cd /path/to/gvm
$ mongo gvm
> db.candidates.insert({candidate:"groovy", default:"2.0.6"})
> db.versions.insert({candidate:"groovy", version:"2.0.5", url:"http://dist.groovy.codehaus.org/distributions/groovy-binary-2.0.5.zip"})
> db.versions.insert({candidate:"groovy", version:"2.0.6", url:"http://dist.groovy.codehaus.org/distributions/groovy-binary-2.0.6.zip"})

This will:

• create a new gvm database
• the Groovy candidate in the candidates collection (defaulting to version 2.0.6)
• new versions 2.0.5 and 2.0.6 in the versions collection.

Add any other candidates that you might require.

Next, prepare the local GVM environment by building and starting the server.

$ ./gradlew
$ contrib/run.sh

This will start the server on localhost:8080

The database may be configured using environment variables. If non are found, it will assume sensible defaults for a local mongodb installation. The follow environment variables can be specified:

GVM_DB_ADDRESS="mongo-persistor"
GVM_DB_HOST="xxx.mongohq.com"
GVM_DB_PORT="1234"
GVM_DB_NAME="gvm"
GVM_DB_PASSWORD="mypassword"
GVM_DB_USERNAME="myusername"

To install GVM locally running against your local server, run the following commands:

$ ./gradlew install
$ source ~/.gvm/bin/gvm-init.sh