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{
	"emojis": [
		{"emoji": "👩‍👩‍👧‍👧", "name": "family: woman, woman, girl, girl", "shortname": ":woman_woman_girl_girl:", "unicode": "1F469 200D 1F469 200D 1F467 200D 1F467", "html": "👩‍👩‍👧‍👧", "category": "People & Body (family)", "order": ""},
		{"emoji": "👩‍👩‍👧‍👦", "name": "family: woman, woman, girl, boy", "shortname": ":woman_woman_girl_boy:", "unicode": "1F469 200D 1F469 200D 1F467 200D 1F466", "html": "👩‍👩‍👧‍👦", "category": "People & Body (family)", "order": ""},
		{"emoji": "👩‍👩‍👦‍👦", "name": "family: woman, woman, boy, boy", "shortname": ":woman_woman_boy_boy:", "unicode": "1F469 200D 1F469 200D 1F466 200D 1F466", "html": "👩‍👩‍👦‍👦", "category": "People & Body (family)", "order": ""},
		{"emoji": "👨‍👩‍👧‍👧", "name": "family: man, woman, girl, girl", "shortname": ":man_woman_girl_girl:", "unicode": "1F468 200D 1F469 200D 1F467 200D 1F467", "html": "👨‍👩&z

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FFmpeg cheat sheet

A list of useful commands for the ffmpeg command line tool.

Download FFmpeg: https://www.ffmpeg.org/download.html

Full documentation: https://www.ffmpeg.org/ffmpeg.html

Basic conversion

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Nmap Cheat Sheet

src: https://www.stationx.net/nmap-cheat-sheet

Target Specification

| Switch | Example | Description |

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SQL languages

DDL is short name of Data Definition Language, which deals with database schemas and descriptions, of how the data should reside in the database.

DML is short name of Data Manipulation Language which deals with data manipulation, and includes most common SQL statements such SELECT, INSERT, UPDATE, DELETE etc, and it is used to store, modify, retrieve, delete and update data in database.

DCL is short name of Data Control Language which includes commands such as GRANT, and mostly concerned with rights, permissions and other controls of the database system.

Datatypes

Text types

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# https://stackoverflow.com/questions/39928401/recover-db-password-stored-in-my-dbeaver-connection

# requires pycryptodome lib (pip install pycryptodome)

import sys
import base64
import os
import json
from Crypto.Cipher import AES

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#!/usr/bin/env python
"""
LICENSE http://www.apache.org/licenses/LICENSE-2.0
"""

import argparse
import datetime
import sys
import time
import threading

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date +%s | sha256sum | base64 | head -c 32 ; echo

openssl rand -base64 32

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ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

You can get the list of installed codecs with:

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#!/usr/bin/env node

const { SM2 } = require('gm-crypto');

const { publicKey, privateKey } = SM2.generateKeyPair();
console.log("publicKey is: ", publicKey);
console.log("privateKey is: ", privateKey);

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import R from "ramda";

const scaner = y => R.map(x => R.join(";", [y, x]));
const permutationOrderly = aoa => R.reduce( 
  (a, b) => R.flatten( R.juxt( R.map( scaner, a ) )( b ) ), 
  R.head(aoa), 
  R.remove(0, 1, aoa) 
);

// -- trace