shahanahmed86

Migrate GPG Keys from One Workstation to Another

Replace [your key] with your key ID

To obtain your key ID

gpg --list-secret-keys --keyid-format LONG

Which returns something like

shahanahmed86

// check version
node -v || node --version

// list locally installed versions of node
nvm ls

// list remove available versions of node
nvm ls-remote

// install specific version of node

shahanahmed86

type Listener<T extends Array<any>> = (...args: T) => void;

class EventEmitter<EventMap extends Record<string, Array<any>>> {
  private listeners: { [K in keyof EventMap]?: Set<Listener<EventMap[K]>>} = {};

  private getListeners<K extends keyof EventMap>(eventName: K): Set<Listener<EventMap[K]>> {
    return this.listeners[eventName] ?? new Set();
  }

  on<K extends keyof EventMap>(eventName: K, listener: Listener<EventMap[K]>) {

shahanahmed86

# Backup
docker exec -t your-db-container pg_dumpall -c -U postgres > dump_`date +%d-%m-%Y"_"%H_%M_%S`.sql

# Restore
cat your_dump.sql | docker exec -i your-db-container psql -U postgres

shahanahmed86

name: ci-cd pipeline deploy to prod

on:
  push:
    branches: [ feature/github-action ]
jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
    - name: Get Github action IP

shahanahmed86

Upload files to Google Drive using Google Apps Script Web Apps and save records in Google Sheets.

shahanahmed86

# Backup
docker exec CONTAINER /usr/bin/mysqldump -u root --password=root DATABASE > backup.sql

# Restore
cat backup.sql | docker exec -i CONTAINER /usr/bin/mysql -u root --password=root DATABASE

shahanahmed86

Install React Native in Ubuntu 20.04

1. Install NodeJS

• For Development Purpose using NVM

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.35.3/install.sh | bash

shahanahmed86

Node.js Deployment

Steps to deploy a Node.js app to DigitalOcean using PM2, NGINX as a reverse proxy and an SSL from LetsEncrypt

1. Sign up for Digital Ocean

If you use the referal link below, you get $10 free (1 or 2 months) https://m.do.co/c/5424d440c63a

2. Create a droplet and log in via ssh

I will be using the root user, but would suggest creating a new user

shahanahmed86

Step 1: Download Oracle Database Express Edition.

http://www.oracle.com/technetwork/database/database-technologies/express-edition/downloads/index.html

Step 2: Instructions before install Oracle

1. Copy the downloaded file and paste it in home directory.

2. Unzip using the command:

unzip oracle-xe-11.2.0-1.0.x86_64.rpm.zip