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Methods of Signing Git Commits on MacOS

Last updated March 13, 2024

This Gist explains how to sign commits using gpg in a step-by-step fashion. Previously, krypt.co was heavily mentioned, but I've only recently learned they were acquired by Akamai and no longer update their previous free products. Those mentions have been removed.

Additionally, 1Password now supports signing Git commits with SSH keys and makes it pretty easy-plus you can easily configure Git Tower to use it for both signing and ssh.

For using a GUI-based GIT tool such as Tower or Github Desktop, follow the steps here for signing your commits with GPG.

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

###Let's install Vagrant###

Install VirtualBox: https://www.virtualbox.org/
Install Vagrant: http://vagrantup.com/

###Select a Vagrant Box from https://vagrantcloud.com###

#add it to your list of boxes
vagrant box add hashicorp/precise32
#create a new folder for your project &amp; init vagrant

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

-E: will describe the underlaying queries of the \ commands (cool for learning!)
-l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

Octave CheatSheet

GNU Octave is a high-level interpreted language, primarily intended for numerical computations.
(via GNU Octave)

Hint: I also mad an octave docset for Dash: https://github.com/obstschale/octave-docset

	## install homebrew
	echo "Installing Homebrew.."
	/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
	echo "Homebrew successfully installed"

	## install brew cask
	echo "Installing brew cask.."
	brew tap homebrew/cask
	echo "Homebrew cask successfully installed"

	#
	# -------------------- authorize script --------------------
	#

	# -- coding: utf-8 --
	"""
	Just adjust the global variables accordingly and then run this script from the command line.
	Make sure the correct client_secret_file is selected,
	and that it has the necessary right configured.

	'''This script goes along the blog post
	"Building powerful image classification models using very little data"
	from blog.keras.io.
	It uses data that can be downloaded at:
	https://www.kaggle.com/c/dogs-vs-cats/data
	In our setup, we:
	- created a data/ folder
	- created train/ and validation/ subfolders inside data/
	- created cats/ and dogs/ subfolders inside train/ and validation/
	- put the cat pictures index 0-999 in data/train/cats

	# vim: set fileencoding=utf-8 :
	#
	# How to store and retrieve gzip-compressed objects in AWS S3
	###########################################################################
	#
	# Copyright 2015 Vince Veselosky and contributors
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at

	#! /usr/bin/env python
	"""Git pre-commit hook to run pylint on python files.

	To install:
	wget https://gist.github.com/nivbend/7e0e306a98138916b3c9#file-run_pylint-py -O .git/hooks/pre-commit
	"""

	from __future__ import print_function
	from subprocess import check_output, CalledProcessError
	from sys import stderr