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tranghaviet /
Created Oct 29, 2019 — forked from Kartones/
PostgreSQL command line cheatsheet


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)
tranghaviet / iso-639-1-codes.php
Created Oct 24, 2019 — forked from DimazzzZ/iso-639-1-codes.php
ISO 639-1 language codes array
View iso-639-1-codes.php
$codes = [
'ab' => 'Abkhazian',
'aa' => 'Afar',
'af' => 'Afrikaans',
'ak' => 'Akan',
'sq' => 'Albanian',
'am' => 'Amharic',
'ar' => 'Arabic',
tranghaviet / Google TTS
Last active Sep 14, 2019
Englist to Vietnamese translation script (can use in GoldenDict)
View Google TTS
# Add Audio Program type to GoldenDict
bash -c "p=$(echo "%GDWORD%" |sed 's/ /+/g'); wget -q -U Mozilla -O -\&q=$p\&tl=en\&client=tw-ob | mpg123 -"
tranghaviet /
Last active Jul 12, 2019
Git Branch Naming Convention

#Branch Naming

Branches being created should have the following format:

<story type>/<story id>-<3-4 word story description>



tranghaviet / placeCaretAtEnd.js
Created Jul 11, 2019
place caret at end of contenteditable element
View placeCaretAtEnd.js
function placeCaretAtEnd(el) {
if (typeof window.getSelection != "undefined"
&& typeof document.createRange != "undefined") {
const range = document.createRange()
const sel = window.getSelection()
tranghaviet / crypto-aes-gcm.js
Created Jun 14, 2019 — forked from chrisveness/crypto-aes-gcm.js
Uses the SubtleCrypto interface of the Web Cryptography API to encrypt and decrypt text using AES-GCM (AES Galois counter mode).
View crypto-aes-gcm.js
* Encrypts plaintext using AES-GCM with supplied password, for decryption with aesGcmDecrypt().
* (c) Chris Veness MIT Licence
* @param {String} plaintext - Plaintext to be encrypted.
* @param {String} password - Password to use to encrypt plaintext.
* @returns {String} Encrypted ciphertext.
* @example
* const ciphertext = await aesGcmEncrypt('my secret text', 'pw');
tranghaviet / latlong.php
Created Dec 6, 2018 — forked from arubacao/latlong.php
Latitude Longitude Regular Expression Validation PHP
View latlong.php
* Validates a given latitude $lat
* @param float|int|string $lat Latitude
* @return bool `true` if $lat is valid, `false` if not
function validateLatitude($lat) {
return preg_match('/^(\+|-)?(?:90(?:(?:\.0{1,6})?)|(?:[0-9]|[1-8][0-9])(?:(?:\.[0-9]{1,6})?))$/', $lat);

1. Preparing the server

Install git

sudo apt install git-all

Generate Server's SSH public key

ssh-keygen -t rsa -b 4096 -C "deploy"
cat ~/.ssh/
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