robertolos

# Add to .bashrc or .zshrc
psportkill() {
  if [ $# -eq 0 ]
  then
    echo "Missing port number. Usage: psportkill 5000"
    exit 1
  fi
  echo "Killing process on port $1"
  lsof -i 4tcp:$1 -sTCP:LISTEN | awk '{if(NR>1)print $2}' | xargs kill
  if [ $? -eq 0 ]

robertolos

// # https://jestjs.io/docs/ecmascript-modules#module-mocking-in-esm

// #### module.ts ####
import { getData } from "./submodule";

export const myModule = () => {
  return getData();
};

// #### submodule.ts ####

robertolos

# Initialise a new node project with typescript
# usage:
# > ./initTypescriptProject.sh my-app-name

PROJECT_NAME=$1

mkdir $PROJECT_NAME
cd $PROJECT_NAME
npm init -y
yarn add --dev typescript ts-node nodemon rimraf @types/node jest

robertolos

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

• -E: will describe the underlaying queries of the \ commands (cool for learning!)
• -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

robertolos

1. Write Raspberry PI OS to an SD card using Raspberry PI Manager.

2. Create a file named user userconf (or userconf.txt) containing the following:
Code: 

`pi:$6$c70VpvPsVNCG0YR5$l5vWWLsLko9Kj65gcQ8qvMkuOoRkEagI90qi3F/Y7rm8eNYZHW8CY6BOIKwMH7a3YYzZYL90zf304cAHLFaZE0`

3. Place userconf (or userconf.txt) plus an empty file named ssh (or ssh.txt) in the BOOT (FAT32) partition of the SD card.

4. Insert the SD card in the Raspberry Pi and it should boot with access to user 'pi' (password : raspberry) via SSH.

robertolos

version: "3"

services:
  db:
    image: mongo 
    restart: always 
    ports: 
      - 27017:27017
    environment: #env variables to pass into the container
       MONGODB_DATABASE: nest-course