Avi avinash-oza

Note: PBSS in Geth >=1.13.0 removes the need to prune manually.

Old content for reference

Overview

Geth (Go-Ethereum) as of July 2022 takes about 650 GiB of space on a fast/snap sync, and then grows by ~ 14 GiB/week with default cache, ~ 8 GiB/week with more cache.

Installing Debian 8.5 "jessie" on a Lenovo X1 Carbon 4th generation (20FB) - 2016

UPDATE 2018-02-24: I got a new Lenovo X1 Carbon 5th gen and tried to do the same setup with Debian 9.3.0. It was an utter failure because of some boot issues. I went with Xubuntu instead and everything works FLAWLESSLY. Xubuntu is beautiful.

I've had my mind on switching my development machine from a 13" MacBook Pro Retina to a Lenovo X1 Carbon running Linux for a while. The main reason is getting more familiar with Linux itself and also to have a more stable and minimal dev environment. So I finally got the machine and decided to install Debian 8.5 "jessie". Why Debian? Well, I tried installing Arch Linux once and couldn't get past getting wifi to work, and Ubuntu seemed like it added too much stuff. The choice was either Debian or Linux Mint. I went with Debian because it seems like it's the most stable.

Create a bootable USB stick

I followed the instructions at https://www.debian.org/releases/jessie/amd64/ch04s

An Ansible summary

Jon Warbrick, July 2014, V3.2 (for Ansible 1.7)

Configuration file

intro_configuration.html

First one found from of

This is a little trick I use to spin up the packages instalation on Debian/Ubuntu boxes in Vagrant.

I add a simple function that checks if a directory named something similar to ~/.vagrant.d/cache/apt/opscode-ubuntu-12.04/partial (it may have another path in Windows or MacOS) and create the directory if it doesn't already exist.

def local_cache(basebox_name)
  cache_dir = Vagrant::Environment.new.home_path.join('cache', 'apt', basebox_name)
  partial_dir = cache_dir.join('partial')
  partial_dir.mkdir unless partial_dir.exist?
 cache_dir

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

	import socket

	class Netcat:

	""" Python 'netcat like' module """

	def __init__(self, ip, port):

	self.buff = ""
	self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

	#!/bin/bash

	# usage: boostrap mybox.example.com path/to/id_rsa.pub

	# preconditions: fresh install of Debian with ssh installed/running
	# effects:
	# - hostname is set
	# - `ansible` user created with disabled password and added to sudo/ssh groups
	# - specified public key added to user's authorized_keys
	# - sudoers updated to allow no password operations

	"""
	Requeriments:

	$ sudo pip install boto dnspython

	Edit ~/.boto to use your AWS credentials

	"""
	import time
	import sys