Ubuntu node and npm uninstall and reinstall

1.node and npm uninstall not clean

#apt-get 卸载
    sudo apt-get remove --purge npm
    sudo apt-get remove --purge nodejs
    sudo apt-get remove --purge nodejs-legacy
    sudo apt-get autoremove
​
    #手动删除 npm 相关目录
    rm -r /usr/local/bin/npm
    rm -r /usr/local/lib/node-moudels
    find / -name npm
    rm -r /tmp/npm* 

find command, I did not perform, but also did not remove the problem does not occur.

2. Install the latest node and npm

# apt-get 安装 nodejs
    sudo apt-get install nodejs
    sudo apt-get install nodejs-legacy

In the implementation of sudo apt-get install nodejs-legacy there is an error (like the kind of can not find the package), then apt-get update still not give up.

Download precompiled package to use https://nodejs.org/en/

bin directory under extracting file contains the node, npm commands, we can use the ln command to set the soft link:

$ ln -s /usr/software/nodejs/bin/npm   /usr/local/bin/ 
$ ln -s /usr/software/nodejs/bin/node   /usr/local/bin/

After performing node -v and npm -v version number can be found