what is the difference between node and nodejs - node.js

After installing node via npm , using 'nvm ls' gives the version which i have installed like v8.9.4 and also node -v also shows the version. But at the same time, when checking for 'nodejs --version' tells me to install node js as 'sudo apt-get install nodejs'.

Via npm or nvm Node.js is called node but if you install via apt-get you need to use the package name nodejs because via apt-get node is a package name take by a completely different application that happens to also be called node.
what are the differences between node.js and node?

Related

npm does not support Node.js v14.4.0

everyone.
I am upgrading Node.js and npm in my Ubuntu 18.04.6 server, but I'm running into a strange problem.
I was using the process as indicated in the installation guides:
To install Node.js version 17.2.0, I use
curl -fsSL https://deb.nodesource.com/setup_17.x | sudo -E bash -
sudo apt-get install -y nodejs
Then, to install npm version, I use
npm install -g npm
However, after this, when I try to use npm to install modules, I get the warning
npm does not support Node.js v14.4.0
You should probably upgrade to a newer version of node as we
can't make any promises that npm will work with this version.
Checking the versions of node, I find that
node --version
yields v14.4.0, but
nodejs --version
yields v17.2.0.
How do I fix it so node will point to the latest version and/or so npm will use the correct version of node?
I had also tried a lot for upgrading node version from 14 to 18. But even after installing latest version and following various procedures my version of node was showing 14.4.0 only.
Luckily following three node version manager commands solved my problem on my ubuntu machine v20.04.4:
1. curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash
2. command -v nvm
3. nvm install node
Now check node has been updated to latest version and can be verified with node --version.
If you still find an old version even on installing new latest/lts version, then check which node version is set as default with following command:
nvm ls
you will see green colored version text set with an arrow in front of it. It will also show other versions which have installed recently like v16.15.0, v18.2.0, etc.
Change the node version you want to set by following command:
nvm alias default v18.2.0
After this close the terminal and restart the new terminal and try checking node JS version. Here you got you want..!!

Node Js - Upgrade version, migration guide

I have Node version v6.10.0 with Node Express 4.14.1. I want to upgrade Node version to 7.6 or 8 to make use of async await features.
However, I'm not sure if it is as simple as update node with the command line or if there is something I should be aware of before migrating.
sudo npm cache clean -f
sudo npm install -g n
sudo n stable
I have not found any migration guide on the site, github or whatsoever Internet.
Is it as simple as that as running a terminal instruction and done?
Try Using nvm,using nvm,We can easily switch between different versions of node js.
To Download nvm
curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash
Install a Particular Version Of Node
nvm install version
Use a Node Version
nvm use version

Upgrade the version of nodejs to 5.12.0

I tried to install node.js by NVM in Ubuntu 16.04 server by following this link. And I got:
root#instance-15s8fbzx:/opt# nodejs --version
v4.2.6
root#instance-15s8fbzx:/opt# npm --version
5.3.0
root#instance-15s8fbzx:/opt# node --version
v8.4.0
Then, we I run a mean-stack project by sudo npm start, I got
class User {
^^^^^
SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode
Then, I saw this link, I think maybe because the nodejs version is not correct. I have another server with v5.12.0 as the version of nodejs, and the project worked well there.
Then, I tried to do
sudo npm install -g npm
sudo npm install -g n
sudo n stable
sudo ln -sf /usr/local/n/versions/node/8.4.0/bin/node /usr/bin/node
But the version of the nodejs is still 4.2.6. Does anyone know how to upgrade its version to 5.12.0?
After you have installed NVM and you have installed the necessary version of node, you select the node version as follows:
> nvm use v5.12.0
After upgrading to the Nodejs version, the following error occurred for the Laravel and VUE js packages I already had:
PHP Fatal error: During inheritance of IteratorAggregate: Uncaught
ErrorException: Return type of
Symfony\Component\HttpFoundation\ParameterBag::getIterator() should
either be compatible with IteratorAggregate::getIterator():
Traversable, or the #[\ReturnTypeWillChange] attribute should be used
to temporarily suppress the notice in
C:\xampp\htdocs\clerk\vendor\symfony\http-foundation\ParameterBag.php:210
To solve the issue, I did the following:
composer update
npm update
npm run dev
php artisan serve

I've installed meteor - where is npm?

I've installed meteor on my machine:
curl https://install.meteor.com/ | sh
My understanding is that it meteor runs off of node.js and automatically installs it. And node automatically installs npm.
I'm working through the Discover Meteor tutorial and it has me run:
npm install -g mup
But I get the following output:
-bash: npm: command not found
Do I need to run it from a different directory? Or download / install something extra onto my machine. Add it to my PATH?
When you install Meteor, it does not automatically install node && npm. When installing Meteor, it will download something called dev_bundle which has NodeJS and all the NPM modules needed by Meteor. All these modules are pre-compiled for your platform but are not "installed" per-se.
Check out this post if you want to use the node distribubtion included with Meteor: https://meteorhacks.com/how-meteor-uses-node. I suggest you just install Node on your own, though.

how to install express js on ubuntu?

I am using ubuntu 14.04 LTS.
I installed nodejs as mentioned here, and then I installed express by running sudo npm install -g express#3 it got installed but when I try to create an app or even try to look at the version by running express -v or express -V it doesn't give any sort of output.
Any help is much appreciated, Thanks in advance!
Installation of node in ubuntu is fairly a straight forward process. I don't know what gone wrong with your earlier attempt.anyway you can install it again if you wish. there are two ways to install node.
Download and install from nodejs.or
Use NVM(node version manager)
I always prefer the NVM method because it not only allows you to switch between versions but also avoids some of issues that otherwise you may face later. example, can't install npm packages globally without sudo.
Before you start remove your old installation
sudo rm -r ~/.npm
Now install nvm
curl https://raw.githubusercontent.com/creationix/nvm/v0.16.1/install.sh | bash
To activate nvm
source ~/.nvm/nvm.sh
Then install node
nvm install 0.10
nvm use 0.10
To set a default Node version to be used in any new shell
nvm alias default 0.10
Check everything done properly
node --version
Then install express
npm install -g express

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