Gabriel Inzirillo Ganbin

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How to setup GPG for signing commits with Git, SourceTree, and GitHub on Mac

Install GPG tools

Install GPG tools and setup pin entry by running:

brew install gnupg pinentry-mac
mkdir -m 700 -p ~/.gnupg
echo "pinentry-program /usr/local/bin/pinentry-mac" >> ~/.gnupg/gpg-agent.conf
killall gpg-agent

To limit a CPU to a certain C-state, you can pass the processor.max_cstate=X option in the kernel line of /boot/grub/grub.conf.

Here we limit the system to only C-State 1:

    kernel /vmlinuz-2.6.18-371.1.2.el5 ... processor.max_cstate=1

On some systems, the kernel can override the BIOS setting, and the parameter intel_idle.max_cstate=0 may be required to ensure sleep states are not entered:

Revert the full commit

Sometimes you may want to undo a whole commit with all changes. Instead of going through all the changes manually, you can simply tell git to revert a commit, which does not even have to be the last one. Reverting a commit means to create a new commit that undoes all changes that were made in the bad commit. Just like above, the bad commit remains there, but it no longer affects the the current master and any future commits on top of it.

git revert {commit_id}

About History Rewriting

Delete the last commit

Deleting the last commit is the easiest case. Let's say we have a remote origin with branch master that currently points to commit dd61ab32. We want to remove the top commit. Translated to git terminology, we want to force the master branch of the origin remote repository to the parent of dd61ab32:

	export default function SessionsList() {
	const sessionsQuery = useSessionsListQuery();

	return (
	<PageLayout title="My sessions">
	{matchQueryStatus(sessionsQuery, {
	Loading: (
	<>
	<Skeleton height={70} mt={6} />
	<Skeleton height={70} mt={6} />

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8" />
	<meta name="viewport" content="width=device-width, initial-scale=1.0" />
	<title>Chia WalletConnect Demo</title>
	</head>
	<body>
	<div>
	<button id="connect-button">Connect Wallet</button>

	# open the boot parameters file for the linux kernal
	sudo nano /etc/default/grub

	# we will be editing the 'GRUB_CMDLINE_LINUX_DEFAULT' key
	#set it to
	GRUB_CMDLINE_LINUX_DEFAULT="quiet splash processor.max_cstate=1 rcu_nocbs=0-11"

	# test for a while and then set it to 5 if all is well
	GRUB_CMDLINE_LINUX_DEFAULT="quiet splash processor.max_cstate=5 rcu_nocbs=0-11"

	import requests # dependency

	url = "<your url>" # webhook url, from here: https://i.imgur.com/f9XnAew.png

	# for all params, see https://discordapp.com/developers/docs/resources/webhook#execute-webhook
	data = {
	"content" : "message content",
	"username" : "custom username"
	}

	$ curl --help
	Usage: curl [options...] <url>
	--abstract-unix-socket <path> Connect via abstract Unix domain socket
	--alt-svc <file name> Enable alt-svc with this cache file
	--anyauth Pick any authentication method
	-a, --append Append to target file when uploading
	--basic Use HTTP Basic Authentication
	--cacert <file> CA certificate to verify peer against
	--capath <dir> CA directory to verify peer against
	-E, --cert <certificate[:password]> Client certificate file and password

	## Pre-requisite: You have to know your last commit message from your deleted branch.
	git reflog
	# Search for message in the list
	# a901eda HEAD@{18}: commit: <last commit message>

	# Now you have two options, either checkout revision or HEAD
	git checkout a901eda
	# Or
	git checkout HEAD@{18}