Category Archives: Node JS

Install or update nodejs usin NVM in Ubuntu

Node JS is a JavaScript runtime built on Chrome’s V8 JavaScript engine. Node.js uses an event driven, non-blocking I/O model that makes it lightweight and efficient
 Using nvmNVM, which stands for “Node.js version manager” we can install multiple versions of nodejs on Ubuntu.

To install or update nvm, you can use the install script using cURL: ( You can find the installation instructions on projects github page https://github.com/creationix/nvm/blob/master/README.md)


or using Wget:


Run the script by running 


To get the list of available Node.js versions

npm install – Please try running this command again as root/Administrator

If you are getting this error while running npm install, then you are not having write permission on .npm directory.

To get the ownership of this directory run following command

Also we need to give write permission to node_modules directory

ref – http://stackoverflow.com/questions/16151018/npm-throws-error-without-sudo