the program "node" is currently not installed?
here are the installation steps:
enter the command: wget https://npm.taobao.org/mirror.
xz-d node-v8.9.3-linux-x64.tar.xz or tar-xzvf node-v8.9.3-linux-x64.tar.gz
tar-xvf node-v8.9.3-linux-x64.tar
ln-s / node-v8.9.3-linux-x64/bin/node / usr/local/bin/node
ln-s / node-v8.9.3-linux-x64/bin/npm/usr/local/bin/npm
(hint: the last two steps need to be performed in the root directory)
4. Enter the command: node-v is installed successfully when the version number appears.
npm-v is installed successfully when the version number appears.