Genzer

#!/usr/bin/env bash

# Overview
# ----
# The following script is used for migrate a Git repository containing lots of binary file
# to use Git LFS.
#
# This script incorporates all steps described in the article "Convert Git to Git LFS" [1].
#
# Prerequisites:

Genzer

#!/usr/bin/env bash

set -e

# Heavily copied from https://stackoverflow.com/questions/43235179/how-to-execute-ssh-keygen-without-prompt.

# Generate a SSH key using Ed25519 (instead of RSA) without a passphrase.
# The command will run silently.

ssh-keygen -o -t ed25519 -f /tmp/test.pem -N '' <<<y 2>&1 >/dev/null

Genzer

Genzer Hawker

I created this Gist simply for testing https://gist.io.

Genzer

//usr/bin/env jshell
import java.io.InputStream;
import java.io.OutputStream;
import java.security.MessageDigest;
import java.security.DigestInputStream;

/**
* A super elegant way to produce a `InputStream` at any size using an iterating
* approach (Stream-like).
* This was copied from https://www.nurkiewicz.com/2014/07/building-extremely-large-in-memory.html

Genzer

const util = require('util');
const stream = require('stream');
const pipeline = util.promisify(stream.pipeline);
const Readable = stream.Readable;
const PassThrough = stream.PassThrough;
const {randomBytes} = require('crypto');

// const RandomStream = function(options) {
//   const {
//     sizeInBytes,

Genzer

#!/usr/bin/env bash

set -ueo pipefail

#
# This script is for converting .DAV video file created by CCTV camera [1] to .MP4.
#
# The script was used by me personally for converting the recorded video by an Android
# app gDMSS Lite to MP4. Tested mainly on MacOS Catalina.
# 

Genzer

Notes Taking

Note Taking Methods (organizing notes)

Zekkelkasten - https://en.wikipedia.org/wiki/Zettelkasten

P.A.R.A - https://fortelabs.co/blog/para/

Non-methodologies

Genzer

Convert checksum between Hex and Base64 using CLI

From Hex to Base64

$> echo "da3968197e7bf67aa45a77515b52ba2710c5fc34" | xxd -r -p | base64
2jloGX579nqkWndRW1K6JxDF/DQ=

From Base64 to Hex

Genzer

#!/usr/bin/env bash

docker_hub_rate_limit_check() {

  # This function is implemented following instructions in Docker's guide.
  # Usage is simple:
  #  - Run the function to verify the Rate Limit of your current IP (anonymous).
  #  - Passing with "username:password" to verify Rate Limit of your Docker Hub
  #  account.
  #

Genzer

#!/usr/bin/env bash

# Do `cd ..` by x times.
# function back() { for x in {1..${1:-1}}; do cd ..; done }
#
back() {
  local target="${1:-1}"
  local full_path="$(pwd)"

  # The script supports