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Can I install react native Cli through terminal globally?

I want to install react-native cli but I don't where to run this command: npm install -g react-native-cli. Do I need to run this command on my macOS terminal or when I will make a directory for my react native app then there I need to run this command in vscode?
Is there any issue if I run this command in my terminal or If I run this in VScode?

React Native is distributed as two npm packages, react-native-cli and react-native.
The first one is a lightweight package that should be installed globally (npm install -g react-native-cli), while the second one contains the actual React Native framework code and is installed locally into your project when you run react-native init.
Because react-native init calls npm install react-native, simply linking your local GitHub clone into npm is not enough to test local changes.
npm install –g react-native-cli
· This line installs the npm package react-native-cli along with its dependencies(from the npm repository host) inside the globally shared node_modules folder.
· Global install (with -g): puts stuff in /usr/local or wherever node is installed. This will also allow you to access the module from the command-line, as the bin is symlinked into a PATH folder (usually usr/local/bin).
Refer below link
https://rlogicaltech.medium.com/how-to-install-react-native-on-mac-step-by-step-guide-1ac822aedd4f

You can run the command anywhere in the terminal.
It will install the react-native-cli globally as we are specifying the "-g" option in the command.

Use this
npm install -g expo-cli

this how I solved it.
npm install -save react-native#latest

Cordova: command not found after installing globally

I try to install Cordova in macOS Mojave. I run the following command to install globally. It is installed successfully npm i -g cordova
but when I check the version using cordova --version , It gives me the error "cordova: command not found".
and also when I try to get the location using which cordova, It returns nothing.

Refer this great write up: http://blog.webbb.be/command-not-found-node-npm/
This can happen when npm is installing to a location that is not the standard and is not in your path.
To check where npm is installing, run: npm root -g
It SHOULD say /usr/local/lib/node_modules, If it doesn't then follow this:
Set it to the correct PATH:
run: npm config set prefix /usr/local
Then reinstall your npm package(s) with -g:
npm install -g cordova etc
If this doesn't work then try adding the global path of cordova(where it got installed) to your $PATH variable.

npm installation in command prompt

After setting new windows in my laptop,i am trying to install npm in command prompt.But i am facing an error which picture is given in below.Would anybody help me out?

If you don't specify a package to install (like npm install -g nodemon) npm will try to install all packages from the current package.json file. If there is non, npm will throw this error.

Npm is already installed. That is why the error message is not Command not found.
The specific command you issued npm install -g attempts to use npm to install the package in the current directory globally.
Leaving the point that installing packages globally is a bad idea aside, this is failing because you are running the command in a directory that does not contain a package. It is your home directory, not one containing a package.json file.

If you are trying to install npm(node package manager) do it by downloading it from here: https://www.npmjs.com/get-npm, then you are good to go.
The command you are actually giving is to install a package using npm(check https://docs.npmjs.com/cli/install).
Thats why the error shows could not install from "" as you have not specified any package to install.

Issue when using npm Windows Upgrade

I've been trying to update npm on windows and found this post which provided a solution where the following commands were supposed to be run:
Set-ExecutionPolicy Unrestricted -Scope CurrentUser -Force
npm install -g npm-windows-upgrade
npm-windows-upgrade
The first command executes seemingly correctly, but when I try running the second one, I get this log which seems to indicate that a version of windows upgrade needs to be specified. So I then ran:
npm install -g npm-windows-upgrade 6.9.1 and got this error log
Of course when the last command of npm-windows-upgrade is run, I get the error that it isn't recognized. The other SO post had a solution for either removing both of these files:
C:\Program Files (x86)\nodejs\npm
C:\Program Files (x86)\nodejs\npm.cmd
or
running this command in an elevated powershell:
npm install npm#latest
As I don't have admin rights (and can't really acquire them) on my computer and given that both of these options require admin rights, how can I go about upgrading node.js on Windows?

i never did use npm-windows-upgrade but it seam like you need to run cmd as administration
otherwise i recommande using n
Run cmd as adminstrator and install n using :
> npm install -g n
then Upgrade or install the latest official release using :
> n latest
Upgrade or install the stable official release using :
> n stable
Upgrade or install the latest LTS official release:
> n lts

Error in npm for npm install selenium-webdriver

I am using Windows Server 2008 R2 EE OS. In which I have npm package manager. I am trying to run the below command to install Selenium Webdriver package.
Command:
npm install selenium-webdriver
I am receiving below error while doing it.
Error:
node.js npm should be run outside of the node repl in your normal
shell

You are running the npm command inside the node shell.
Open another shell and just type "npm install bla-bla", npm should be on the PATH. Or cd to its directory and type command.
See my command images
Doing it wrong
Doing it right
In the case of windows, sometimes it is bad to consider that the npm will create folder itself for what it required.
The best is to manually create npm folder like "C:\Users\username\AppData\Roaming\npm".
Hope this help.

By creating a folder C:/Users//AppData/Roaming/npm solved my problem.