DEV Community: Vishnu

Complete Remove/Uninstall node form mac OS

Vishnu — Mon, 30 Jan 2023 16:45:30 +0000

To remove Node.js from a Mac, follow these steps:

Uninstall Node.js using npm:

npm uninstall -g node

Remove the Node.js executable and the npm modules:

 rm /usr/local/bin/node
 rm -rf /usr/local/lib/node_modules

Remove the Node.js home directory:

rm -rf ~/.npm

Remove the npm and node directories from PATH:

vi ~/.bash_profile

Search for and delete the following lines:

export PATH=$PATH:/usr/local/bin/npm
 export PATH=$PATH:/usr/local/bin/node

Save and exit the file.

Restart the terminal or run the following command:

source ~/.bash_profile

This should remove Node.js from your Mac. You can verify the uninstallation by running the following command:

node -v

If Node.js is uninstalled, you should see an error message saying that the command is not found.

Remove NVM from MacOS

To remove nvm (Node Version Manager) from your Mac, follow these steps:

Remove the nvm installation directory:

rm -rf ~/.nvm

Remove the nvm configuration from your shell profile:

vi ~/.bash_profile

Search for and delete the following lines:

export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"  # This loads nvm

Save and exit the file.

Restart the terminal or run the following command:

source ~/.bash_profile

This should remove nvm from your Mac. You can verify the uninstallation by running the following command:

nvm -v

If nvm is uninstalled, you should see an error message saying that the command is not found.

1/20 Coding Day

Vishnu — Sat, 10 Dec 2022 19:40:59 +0000

hello geekies...

First day i am going to setup react native project in macOS.
So as we all do i search on google 'How to Setup React Native project in mac' and where i found lot of blog/post.

Let me tell you first one of my bad habit is i don’t read blog, i just jump on the code example and try to understand what is going or what i need to do or which cmd i need to copy/paste.

I found on google to setup React native project we need following things:

node
android studio (for virtual device)
watchman (don't know why?)
Xcode (don't know why?)
java (i think for apk building)

Lesson of the Day

I learn one main think in mac what we install with brew so we need setup path in shell working directory.
we can check current working directory with this cmd echo $0 or ps. and in my case i am using zsh shell.

One more thing...

i am using nvm (node version manager) for use multiple version. For install use brew install nvm cmd and after that i set nvm path in ~/.zshrc file

How to Run Postgres Database in cmd/Terminal

Vishnu — Fri, 16 Jul 2021 07:33:18 +0000

Hello programmers, as we know to run database we need a DBMS software, so i am going to tell you all we how to run database in cmd for window or terminal for mac.

let get start

open CMD/Terminal

go to bin folder into database folder and then write code :

psql -h localhost -p 5440 -d database_name -U user_name

-h for host
-p for port
-d for database
-U for user

Signup HTML file open in NodeJS server

Vishnu — Sun, 05 Jul 2020 08:09:22 +0000

Hello Developers,
In this Post, i will cover this following things :

create a server in Nodejs
how to use experss module
how to open html file in nodejs server

Step 1. Install NodeJS

Step 2. run `npm init`

Step 3. now we need to create a server

we have mainly two way

create server with http module (inside)
create server with express module (outside)

i am goning to use express module. so we need to

Step 4. run this command `npm install express`

Step 5. `npm install open`

i am goning to use open module is using open web browser after server has connect

Step 6. create a file `index.js` and write this code

Step 7. now create a html file `index.html`

now question is how to open html file on nodejs server??
we have many way to do this...
we can use fs, http-server, express modules..
i am going to use express module. it's easy and popular.

Step 8. replace this code

res.sendFile(`${__dirname}\\index.html`);

remove this code res.send('Welcome')

one more thing

Step 9. add this script in package.json `"start": "node index.js"`

Step 10. run this command `npm start`

if you want to download this code. i am sharing this code on github link [https://github.com/whovishnu/express-server-nodejs]

ThankYou