我的AWS EC2实例上运行的是Ubuntu（18.04.1 LTS）Linux发行版。
我已经在该系统上安装了必要的NodeJS和NPM。我还配置了ReactJS在此系统上运行。以下是我的系统上当前可用的NodeJS版本的详细信息：
>node -v
输出：v6.0.0
>nodejs -v
输出：v10.11.0
>npm -v
Output: v6.4.1
现在，我正在此系统上设置MongoDB。为此，我已经安装了Mongo，并且工作正常。我还安装了“ nodemon”以自动启动“ server.js”。
但是现在当我运行命令nodemon时，它会提供以下输出：
ubuntu@/node$ nodemon
[nodemon] 1.18.4
[nodemon] to restart at any time, enter `rs`
[nodemon] watching: *.*
[nodemon] starting `nodemon ./server.js`
[nodemon] running an unsupported version of node v6.0.0
[nodemon] nodemon may not work as expected - please consider upgrading to LTS
[nodemon] 1.17.5
[nodemon] to restart at any time, enter `rs`
[nodemon] watching: *.*
[nodemon] starting `node ./server.js`
[nodemon] app crashed - waiting for file changes before starting...
rs
[nodemon] starting `nodemon ./server.js`
[nodemon] running an unsupported version of node v6.0.0
[nodemon] nodemon may not work as expected - please consider upgrading to LTS
[nodemon] 1.17.5
[nodemon] to restart at any time, enter `rs`
[nodemon] watching: *.*
[nodemon] starting `node ./server.js`
[nodemon] app crashed - waiting for file changes before starting...
最大的困惑是我无法弄清楚如何仅升级node版本而不升级nodejs版本。
有人可以帮助解决这个问题吗？
PS：我还希望如果我升级npm或node
谢谢