Amjad Ali amjd

PostgreSQL is Enough

Background and Cron Jobs

How to recover lost Python source code if it's still resident in-memory

I screwed up using git ("git checkout --" on the wrong file) and managed to delete the code I had just written... but it was still running in a process in a docker container. Here's how I got it back, using https://pypi.python.org/pypi/pyrasite/ and https://pypi.python.org/pypi/uncompyle6

Attach a shell to the docker container

Install GDB (needed by pyrasite)

apt-get update && apt-get install gdb

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

Effective Engineer - Notes

By Edmond Lau
Highly Recommended 👍
http://www.theeffectiveengineer.com/

	# Put this function to your .bashrc file.
	# Usage: mv oldfilename
	# If you call mv without the second parameter it will prompt you to edit the filename on command line.
	# Original mv is called when it's called with more than one argument.
	# It's useful when you want to change just a few letters in a long name.
	#
	# Also see:
	# - imv from renameutils
	# - Ctrl-W Ctrl-Y Ctrl-Y (cut last word, paste, paste)

	/*
	Copy this into the console of any web page that is interactive and doesn't
	do hard reloads. You will hear your DOM changes as different pitches of
	audio.

	I have found this interesting for debugging, but also fun to hear web pages
	render like UIs do in movies.
	*/

	const audioCtx = new (window.AudioContext \|\| window.webkitAudioContext)()

	# -- coding: utf-8 --
	from mitmproxy.options import Options
	from mitmproxy.proxy.config import ProxyConfig
	from mitmproxy.proxy.server import ProxyServer
	from mitmproxy.tools.dump import DumpMaster


	class Addon(object):

	def request(self, flow):

	If you are using Google Chrome and Client SSL Cert and you are tired of constantly selecting certificates, try this:

	1. Download and extract Chrome policy templates from here: http://dl.google.com/dl/edgedl/chrome/policy/policy_templates.zip
	2. Start the Local Group Policy Editor: Start > Run > gpedit.msc > OK
	3. Right-click on Computer Policy > Computer Configuration > Administrative Templates and choose Add/Remove Templates…
	4. Click Add…, choose policy_templates\windows\adm\en-US\chrome.adm (from the already downloaded and extracted policy templates) and click Open (Note: if your Windows language is different from en-US choose the chrome.adm from the respective language folder)
	5. Navigate to Local Computer Policy > Computer Configuration > Administrative Templates > Classic Administrative Templates (ADM) > Google > Google Chrome > Content Settings
	6. Double-click on Automatically select client certificates for these sites
	7. Click Enabled
	8. Click Show… in the Options pane

	#!/bin/sh

	#
	# ONLY USE IPV6 NAT FOR TESTING PURPOSES
	#
	# IPV6 IN PRODUCTION SHOULD RUN WITHOUT NAT!
	#

	ip6tables -t nat -A POSTROUTING -s fd00::/64 -j MASQUERADE
	dockerd --ipv6 --fixed-cidr-v6=fd00::/64

	# use ImageMagick convert
	# the order is important. the density argument applies to input.pdf and resize and rotate to output.pdf
	convert -density 90 input.pdf -rotate 0.5 -attenuate 0.2 +noise Multiplicative -colorspace Gray output.pdf