andreyvit

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a

MohamedAlaa

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

duluca

Configuring AWS ECS to have access to AWS EFS

If you would like to persist data from your ECS containers, i.e. hosting databases like MySQL or MongoDB with Docker, you need to ensure that you can mount the data directory of the database in the container to volume that's not going to dissappear when your container or worse yet, the EC2 instance that hosts your containers, is restarted or scaled up or down for any reason.

Don't know how to create your own AWS ECS Cluster? Go here!

New Cluster

Sadly the EC2 provisioning process doesn't allow you to configure EFS during the initial config. After your create your cluster, follow the guide below.

New Task Definition for Web App

If you're using an Alpine-based Node server like duluca/minimal-node-web-server follow this guide:

JofArnold

/**
 *Submitted for verification at Etherscan.io on 2021-04-22
*/

// File: @openzeppelin/contracts/utils/Context.sol

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

emo-eth

###########
# Imports #
###########

# the RPCs file should include RPC URLs and Etherscan API Keys for relevant networks
# (in a separate file so they don't get committed)
source "$(dirname "$0")/rpcs.sh"
# any useful addresses for various networks for easy reference
source "$(dirname "$0")/addresses.sh"
# any useful functions and definitions for interacting with Seaport

banteg

yorickdowne

Overview

Syncing an Ethereum node is largely reliant on IOPS, I/O Per Second. Budget SSDs will struggle to an extent, and some won't be able to sync at all.

This document aims to snapshot some known good and known bad models.

The drive lists are ordered by interface and then by capacity and alphabetically by vendor name, not by preference. The lists are not exhaustive at all. @mwpastore linked a filterable spreadsheet in comments that has a far greater variety of drives and their characteristics. Filter it by DRAM yes, NAND Type TLC, Form Factor M.2, and desired capacity.

For size, 4TB comes recommended as of mid 2024. The smaller 2TB drive should last an Ethereum full node until early 2025 or thereabouts, with crystal ball uncertainty. Remy wrote a migration guide to 4TB.

cwhinfrey

ChainSwap 1

• $800k
• July 2, 2021
• Vulnerability: Smart contract bug
• Note: Users reported lost funds, ChainSwap shut down all nodes and a fix was deployed within 30 minutes.
• Source: https://chain-swap.medium.com/chainswap-post-mortem-and-compensation-plan-90cad50898ab

ChainSwap 2

• $4.4M
• July 10, 2021
• Vulnerability: Smart contract bug

windsok

This doc has been replaced by the official Ordinals Handbook - https://docs.ordinals.com/guides/collecting/sparrow-wallet.html

claysauruswrecks

# main
llama-index
langchain