delvison

---
version: "3"
services:
  cron:
    container_name: cron
    image: alpine:3.6
    entrypoint:
      - sh
      - -euc
      - |

delvison

A minimal zsh prompt.

Add to .zshrc

# prompt
autoload -Uz vcs_info # enable vcs_info
precmd () { vcs_info } # always load before displaying the prompt
zstyle ':vcs_info:*' formats ' %s(%b)' # git(main)
PS1='%n@%F{magenta}%m %F{green}%/%f$vcs_info_msg_0_ $ '

delvison

#!/bin/bash

readonly bip39_list="bip-39-eng-wordlist.txt"

check_wordlist() {
  if [ ! -f "${bip39_list}" ]; then
    curl -s \
    https://raw.githubusercontent.com/bitcoin/bips/master/bip-0039/english.txt \
    > "${bip39_list}"
  fi

delvison

Tapsigner is an inexpensive Bitcoin signing device that holds your private keys on an NFC card. As of writing this, nunchuck is the only mobile wallet to support it.

Backups of the private key are done so in a AES-128-CTR encryption using a key printed on the back of the card.

To decrypt this key and obtain its xprv value with openssl in cli run the following:

openssl aes-128-ctr -iv 0 -K "<BACKUP_KEY_ON_CARD>" -in backup.aes

delvison

#!/bin/bash

# decrypt an encrypted QR code

zbarimg "${1}" --raw -q | gpg -d | base64 -d

delvison

#!/bin/bash

# create an encrypted QR code

echo -n "$@" | base64 | gpg -c --armor -o - | qrencode -o encrypted_qr.png

delvison

apiVersion: v1
kind: Pod
metadata:
  name: $(USER)-test
  namespace: default
spec:
 containers:
    - name: $(USER)-test
      imagePullPolicy: Always
      image: ubuntu