[node.js] npx command not found

I am working with webpack and I need to execute ./node_modules/webpack/bin/webpack.js using npx. npx webpack would run the webpack binary (./node_modules/webpack/bin/webpack), but each time I execute npx webpack I get bash: npx: command not found.

I am using:

• node: v9.5.0

• npm: 5.6.0

• nvm: 1.1.5

• webpack: 3.11.0

check versions of node, npm, npx as given below. if npx is not installed then use npm i -g npx

node -v
npm -v
npx -v

if you are using Linux system, use sudo command

sudo npm i -g npx

Remove NodeJs and npm in your system and reinstall it by following commands

Uninlstallation

sudo apt remove nodejs
sudo apt remove npm

Fresh Installation

sudo apt install nodejs
sudo apt install npm

Configuration optional, in some cases users may face permission errors.

1. user defined directory where npm will install packages

   mkdir ~/.npm-global

2. configure npm

   npm config set prefix '~/.npm-global'

3. add directory to path

   echo 'export PATH=~/.npm-global/bin:$PATH' >> ~/.profile

4. refresh path for the current session

   source ~/.profile

5. cross-check npm and node modules installed successfully in our system

   node -v
npm -v

Installation of npx

sudo npm i -g npx
npx -v

Well-done we are ready to go... now you can easily use npx anywhere in your system.

if you are using macOS, use sudo command

sudo npm install -g npx

I returned to a system after a while, and even though it had Node 12.x, there was no npx or even npm available. I had installed Node via nvm, so I removed it, reinstalled it and then installed the latest Node LTS. This got me both npm and npx.

Updating node helped me, whether that be from the command line or just re-downloading it from the web

try :

sudo su

then

npm i npx 
or 
npi i -g npx

check your npx version by

npx -v