1$ nvm ls
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1Usage:
2nvm install <version>       Download and install a <version>
3nvm use <version>           Modify PATH to use <version>
4nvm ls                      List versions (installed versions are blue)

1nvm install v10.15 //v10.15 is a version i want.

1nvm use {Node version}
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1curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.34.0/install.sh | bash

1nvm use --delete-prefix $NODE_VERSION
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3example:
4nvm use --delete-prefix v8.9.4