Cloud IDE provides version managers to simplify handling of multiple versions of Node.js and Ruby. With version managers, you can install, manage, and switch between different versions and enhance flexibility and efficiency in development workflows.

Node Version Manager¶

Node Version Manager (NVM) is a version manager for Node.js, which is installed per user and invoked per shell.

To install a different version of Node.js:

1. In the Cloud IDE menu bar, click Terminal > New Terminal.

2. Run the nvm install command and pass the target version.

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   ide:~/project (master #) $ nvm install 14.19.1
   Downloading and installing node v14.19.1...
   Downloading https://nodejs.org/dist/v14.19.1/node-v14.19.1-linux-x64.tar.xz...
   ######################################################################## 100.0%
   Computing checksum with sha256sum
   Checksums matched!
   Now using node v14.19.1 (npm v7.21.1)

To use the newly installed version:

1. In the Cloud IDE menu bar, click Terminal > New Terminal.

2. Run the nvm use <version> command:

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   ide:~/project (master #) $ nvm use 14.19.1
   Now using node v14.19.1 (npm v7.21.1)

To verify that you are running the target version:

1. In the Cloud IDE menu bar, click Terminal > New Terminal.

2. Run the node -v command:

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   ide:~/project (master #) $ node -v
   v18.17.0

Ruby Version Manager¶

Ruby Version Manager (RVM) is a command-line tool that helps you to install, manage, and work with multiple Ruby environments. It helps to ensure that all aspects of Ruby are contained within the user space.

To view the list of existing versions of Ruby:

1. In the Cloud IDE menu bar, click Terminal > New Terminal.

2. Run the rvm list command:

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   ide:~/project $ rvm list
   =* ruby-2.4.9 [ x86_64 ]
   
   # => - current
   # =* - current && default
   #  * - default

To install a different version of Ruby:

1. In the Cloud IDE menu bar, click Terminal > New Terminal.

2. Run the rvm install command and pass your target version:

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   ide:~/project $ rvm install 2.7.2
   Searching for binary rubies, this might take some time.
   No binary rubies available for: debian/bullseye_sid/x86_64/ruby-2.7.2.
   Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies.
   Checking requirements for debian.
   Installing requirements for debian.
   .....
   Installing required packages: libreadline6-dev...
   Requirements installation successful.
   Installing Ruby from source to: /home/ide/.rvm/rubies/ruby-2.7.2, this may take a while depending on your cpu(s)...
   ruby-2.7.2 - #downloading ruby-2.7.2, this may take a while depending on your connection...
     % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                    Dload  Upload   Total   Spent    Left  Speed
   100 14.0M  100 14.0M    0     0  27.7M      0 --:--:-- --:--:-- --:--:-- 27.6M
   ruby-2.7.2 - #extracting ruby-2.7.2 to /home/ide/.rvm/src/ruby-2.7.2.....
   ruby-2.7.2 - #configuring........................................................................
   ruby-2.7.2 - #post-configuration..
   ruby-2.7.2 - #compiling............................................................................................................
   ruby-2.7.2 - #installing..................
   ruby-2.7.2 - #making binaries executable...
   Installed rubygems 3.1.2 is newer than 3.0.9 provided with installed ruby, skipping installation, use --force to force installation.
   ruby-2.7.2 - #gemset created /home/ide/.rvm/gems/ruby-2.7.2@global
   ruby-2.7.2 - #importing gemset /home/ide/.rvm/gemsets/global.gems................................................................
   ruby-2.7.2 - #generating global wrappers.......
   ruby-2.7.2 - #gemset created /home/ide/.rvm/gems/ruby-2.7.2
   ruby-2.7.2 - #importing gemsetfile /home/ide/.rvm/gemsets/default.gems evaluated to empty gem list
   ruby-2.7.2 - #generating default wrappers.......
   ruby-2.7.2 - #adjusting #shebangs for (gem irb erb ri rdoc testrb rake).
   Install of ruby-2.7.2 - #complete
   Ruby was built without documentation, to build it run: rvm docs generate-ri

To view the newly installed version:

1. In the Cloud IDE menu bar, click Terminal > New Terminal.

2. Run the rvm list command:

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   ide:~/project $ rvm list
   =* ruby-2.4.9 [ x86_64 ]
      ruby-2.7.2 [ x86_64 ]
   
   # => - current
   # =* - current && default
   #  * - default
   

To switch to the newly installed version:

1. In the Cloud IDE menu bar, click Terminal > New Terminal.

2. Run the following commands:

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   ide:~/project $ /bin/bash --login
   ide:~/project $ rvm use 2.7.2
   Using /home/ide/.rvm/gems/ruby-2.7.2
   ide:~/project $ rvm list
    * ruby-2.4.9 [ x86_64 ]
   => ruby-2.7.2 [ x86_64 ]
   
   # => - current
   # =* - current && default
   #  * - default