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Bitcoin CLI Commands

N. P. O'Donnell, 2018-2020

Help & Information

Get help:

bitcoin-cli help

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monero-wallet-cli commands

First off, to start the CLI, type:

$ monero-wallet-cli

If there's no wallet file in the current directory it will be created for you on startup, otherwise you'll need to choose a wallet name and one will be created for you.

Important: Monero wallets consist of two files, a wallet file and a keys file. For example if your wallet is called my-wallet, the files will be my-wallet (wallet data file) and my-wallet.keys (key file). Both of these files are needed. Once in the wallet REPL, the following commands are available:

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#!/usr/bin/bash

INTERVAL=10
SRC_DIRS=( Documents )
DEST_HOST=192.168.0.1
DEST_USER=user
DEST_DIR="~/backup" # Quotes are important!

if [ -e ~/.syncfiles.lock ]; then
    echo "lockfile detected"

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Monitor outgoing DNS traffic:

```
tcpdump -vvAs0 port 53
```

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Bitcoin Core Codebase Notes

Transaction Signing

MutableTransactionSignatureCreator (src/script/sign.cpp) seems to be where the sighash is created. There is one constructor which takes a transaction (txToIn), an input index (nInIn), and amount, and a sighash type (eg. SIGHASH_ALL).

https://github.com/bitcoin/bitcoin/blob/master/src/script/sign.cpp#L28

https://github.com/bitcoin/bitcoin/blob/master/src/script/interpreter.cpp#L1234

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Gradle Cheatsheet

Initalize Gradle in Root Dir (similar to git init):

gradle init

this will create some files:

• build.gradle -- Gradle build script
• settings.gradle -- Gradle settings script

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GNU Octave Cheatsheet

Math

Simple Math

>> 1+2
ans =  3
>> 3-1
ans =  2
>> 4*5

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#!/usr/bin/env sh
# make-repo
# Creates a bare, named git repo on the server side
# N. P. O'Donnell, 2020 - 2021

REPO_BASE=/git
REPO_NAME=$1
REPO_DIR=$REPO_BASE/$REPO_NAME.git
HOSTNAME=$(hostname)

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Docker Cheatsheet

N. P. O'Donnell, 2020

Files & Directories

• Containers are stored in /var/lib/docker/containers
• Easiest to use su first if snooping around /var/lib/docker
• Each container has a config.v2.json config file

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Docker Ubuntu Setup

N. P. O'Donnell, 2020

Preparing a Ubuntu host for docker. Ensures an nginx image can run on port 80.

Install docker:

sudo apt-get update
sudo apt-get install docker.io