Matt Long matt-long-92

tmux Cheat Sheet

Table of Contents

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)

	a4b.amazonaws.com
	access-analyzer.amazonaws.com
	account.amazonaws.com
	acm-pca.amazonaws.com
	acm.amazonaws.com
	airflow-env.amazonaws.com
	airflow.amazonaws.com
	alexa-appkit.amazon.com
	alexa-connectedhome.amazon.com
	amazonmq.amazonaws.com

	const http = require("http");
	const server = http.createServer();
	const PORT = 80;

	server
	.on("request", (request, response) => {
	let body = [];
	request
	.on("data", (chunk) => {
	body.push(chunk);


	const { readFile } = require('fs')

	readFile(__filename, () => {
	new Promise(function (resolve, reject) {
	console.log('new promise')
	resolve()
	}).then(() => {
	console.log('then 1')
	})


	new Promise(function (resolve, reject) {
	console.log('new promise')
	resolve()
	}).then(() => {
	console.log('then 1')
	})

	async function foo () {
	console.log('async function')

	const fs = require("fs");

	fs.readFile(__filename, () => {
	// Adding a callback to the timers FIFO queue with setTimeout
	setTimeout(() => {
	console.log("a");
	});

	// Adding a callback to the immediate FIFO queue with setImmediate
	setImmediate(() => {

	// Calling .then on a resolved Promise
	new Promise((resolve, reject) => {
	resolve("a");
	}).then((value) => {
	console.log(value);
	});

	// Calling .catch on a rejected Promise
	new Promise((resolve, reject) => {
	reject(new Error("a"));