Denys Popov denys-popov

Follow these steps to enable Screen Sharing via Terminal.

Navigate to Applications | Utilities and launch Terminal. If you're working from a keyboard only, press Command+Space Bar to launch Spotlight, and then enter Terminal in the search box to launch the app.
Enter the following command into Terminal and press Enter to execute it. You will be prompted to provide admin credentials prior to processing the command.

sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -activate -configure -access -off -restart -agent -privs -all -allowAccessFor -allUsers

The command above will work most of the time, as it uses the kickstart method of enabling remote management, which in turn enables Screen Sharing as well for all users of the device. This isn't the most secure method and it's not recommended to be used like this for long periods of time due to the potential security risks of unauthorized access, but it should serve you well as a temporary workaround for the pr

Secured HLS setup with Nginx as media server

This example is part of this article.

This is an example for an HLS delivery with basic security. Nginx compiled with nginx-rtmp-module & secure-link is used as media server. Features:

Domain filtering
Referrer filtering
Embed buster

On Ubuntu 16.04 LTS, I successfully used the following to disable suspend:

sudo systemctl mask sleep.target suspend.target hibernate.target hybrid-sleep.target

And this to re-enable it:

sudo systemctl unmask sleep.target suspend.target hibernate.target hybrid-sleep.target

Usage: node strace_log_analyzer.js strace.log /tmp

This scripts parses input file that must contain strace log from a single thread. Then script calculates:

execution time of read/write syscall for each file descriptor and summarize execution time for each 1 sec period,
calulates amount of read/write syscalls for each file descriptor

strace log must be collcted with -t -T -f options.

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/

What's an Effective Engineer?

Extract Subtitles From mkv

Instuctions available (moved) at REMOTE ORIGIN website: Extract Subtitles From mkv

	#https://leetarxiv.substack.com/p/dual-ec-backdoor-coding-guide
	from fastecdsa.curve import P256
	from fastecdsa.point import Point
	from random import randint

	class DualEC():
	def __init__(self, seed, P, Q):
	self.seed = seed # Initial integer state of RNG
	self.P = P # First elliptic curve point (public parameter)
	self.Q = Q # Second elliptic curve point (could be maliciously chosen)

	echo "fs.file-max=1048576" >> /etc/sysctl.conf
	echo "net.core.rmem_max = 16777216" >> /etc/sysctl.conf
	echo "net.core.wmem_max = 16777216" >> /etc/sysctl.conf
	echo "net.ipv4.tcp_rmem = 4096 87380 16777216" >> /etc/sysctl.conf
	echo "net.ipv4.tcp_wmem = 4096 65536 16777216" >> /etc/sysctl.conf

	sysctl -p

	echo "* soft nofile 1048576" >> /etc/security/limits.conf
	echo "* hard nofile 1048576" >> /etc/security/limits.conf

	#!/usr/bin/env python3
	#
	# Query AWS Athena using SQL
	# Copyright (c) Alexey Baikov <sysboss[at]mail.ru>
	#
	# This snippet is a basic example to query Athen and load the results
	# to a variable.
	#
	# Requirements:
	# > pip3 install boto3 botocore retrying

	#!/bin/sh
	# default commands for osx to make it nicer to work with

	##########################
	# General UI?UX settings #
	##########################

	# Set hostname (hex of MVB9APPS)
	sudo scutil --set ComputerName "0x4d56423941505053"
	sudo scutil --set HostName "0x4d56423941505053"