bash script wrapping nvm to provide almost certain way to use specified version of node

set-node-version.sh

#!/bin/bash

    if [ "$#" -ne 1 ]; then
      echo "incorrect usage"
      echo "Usage:"
      echo "  SetNodeVersion <VERSION>"
      exit -1
    fi

    NODE_VERSION=$1

    export NVM_DIR="${HOME}/.nvm"
    [ -s "${NVM_DIR}/nvm.sh" ] && . "$NVM_DIR/nvm.sh"  # This loads nvm

    nvm use ${NODE_VERSION} || nvm install ${NODE_VERSION}