node.js - ubuntu 16.04 使用nvm安装nodejs后，切换用户就不见了

Question

ubuntu 16.04 使用root权限，nvm安装nodejs后,输入node -v 是有版本号的，npm -v也是有的，然后切换到另一个用户，发现node -v 提示没有安装nodejs，然后再切换到root，发现之前安装的nodejs也没了！这是什么情况？

Answer 1

nvm will only be available to your user account (the one used to
install nvm)

Available to all users if needed. A soft link is required.
In addition, it is recommended to use NodeSource’s binary installation script under Ubuntu https://github.com/nodesource...

# Using Ubuntu
curl -sL https://deb.nodesource.com/setup_6.x | sudo -E bash -
sudo apt-get install -y nodejs

Answer 2

This should be the reason for the environment variable path. Check whether another user's path contains the nodejs execution directory.
In addition, su - username, is different from su root. I wonder if you switch back to root and use su root.
If su root, then the current environment variable path is still that of the previous user.