Gabriel Falcão gabrielfalcao

I recently happened upon a very interesting implementation of popen() (different API, same idea) called popen-noshell using clone(2), and so I opened an issue requesting use of vfork(2) or posix_spawn() for portability. It turns out that on Linux there's an important advantage to using clone(2). I think I should capture the things I wrote there in a better place. A gist, a blog, whatever.

This is not a paper. I assume reader familiarity with fork() in particular and Unix in general, though, of course, I link to relevant wiki pages, so if the unfamiliar reader is willing to go down the rabbit hole, they should be able to come ou

How to contact me

After some stalking problems I stopped using these accounts. I will repost when I have new info.

Usage

./witch.sh terraform

Result

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GPG and git on macOS

Setup

No need for homebrew or anything like that. Works with https://www.git-tower.com and the command line.

Install https://gpgtools.org -- I'd suggest to do a customized install and deselect GPGMail.
Create or import a key -- see below for https://keybase.io
Run gpg --list-secret-keys and look for sec, use the key ID for the next step
Configure git to use GPG -- replace the key with the one from gpg --list-secret-keys

Creating a CA

Creating a Certificate Authority is easy. There are many scripts out there to do it for you. However, creating a CA that is easy to manage can be tricky. This should walk you through creating a CA and explain all the pieces.

Note: This page takes an extra step to make a fairly PKIX-compliant Certificate Authority. In pariticular, it ensures that the email address associated with your CA is in the SubjectAltName extension rather than in the DN. The former is the PKIX and X509v3 standard way of presenting an email address while the later is the old X509v1 way.

	FROM ubuntu
	# MAINTAINER email#dot.com

	# Add the PostgreSQL PGP key to verify their Debian packages.
	# It should be the same key as https://www.postgresql.org/media/keys/ACCC4CF8.asc
	RUN apt-key adv --keyserver keyserver.ubuntu.com --recv-keys B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8

	# Add PostgreSQL's repository. It contains the most recent stable release
	# of PostgreSQL, ``9.6``.
	RUN echo "deb http://apt.postgresql.org/pub/repos/apt/ precise-pgdg main" > /etc/apt/sources.list.d/pgdg.list

	# -- coding: utf-8 --
	from __future__ import unicode_literals

	import os
	import sys
	import time
	from itertools import chain

	reload(sys)
	sys.setdefaultencoding('utf-8')

	import Cocoa

	class ViewController: NSViewController {
	var statusBar = NSStatusBar.system()
	var statusBarItem : NSStatusItem = NSStatusItem()
	var leMenu : NSMenu = NSMenu()
	var openMenuItem : NSMenuItem = NSMenuItem()
	var exitMenuItem : NSMenuItem = NSMenuItem()

	override func awakeFromNib() {

	################
	# CPROFILE #
	#############################################################################

	# 1 - Profile myfunc() from ipython
	import cProfile
	filename = 'filename.prof'
	cProfile.run('myfunc()', filename)

	# 2 - Convert your file to a usable kcachegrind file in your shell