voidlizard

О специальной олимпиаде Haskell vs Python (pypy) vs всё остальное

Первоначально задача возникла в https://t.me/haskellru и формулировалась примерно так: почему следующий код на Haskell

FrankSpierings

Container security notes

Internet references

Kernel and architecture

• namespaces - overview of Linux namespaces http://man7.org/linux/man-pages/man7/namespaces.7.html

• mount_namespaces - overview of Linux mount namespaces

grogers0

------------------------- MODULE GryadkaCasRegister -------------------------
EXTENDS Integers, Sequences, FiniteSets
-----------------------------------------------------------------------------
\* Timestamps is the set of possible timestamps for operations to choose from.
\*     Each operation uses a unique timestamp.
\* Values is the set of possible values to set the register to.
\* Acceptors is the set of nodes which act as acceptors in the paxos sense.
\* Quorums is the set of all possible quorums, typically simple majorities.
CONSTANTS Timestamps, Values, Acceptors, Quorums

rain-1

WannaCry|WannaDecrypt0r NSA-Cyberweapon-Powered Ransomware Worm

• Virus Name: WannaCrypt, WannaCry, WanaCrypt0r, WCrypt, WCRY
• Vector: All Windows versions before Windows 10 are vulnerable if not patched for MS-17-010. It uses EternalBlue MS17-010 to propagate.
• Ransom: between $300 to $600. There is code to 'rm' (delete) files in the virus. Seems to reset if the virus crashes.
• Backdooring: The worm loops through every RDP session on a system to run the ransomware as that user. It also installs the DOUBLEPULSAR backdoor. It corrupts shadow volumes to make recovery harder. (source: malwarebytes)
• Kill switch: If the website www.iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com is up the virus exits instead of infecting the host. (source: malwarebytes). This domain has been sinkholed, stopping the spread of the worm. Will not work if proxied (source).

update: A minor variant of the viru

BretFisher

2021 Update: Easiest option is Justin's repo and image

Just run this from your Mac terminal and it'll drop you in a container with full permissions on the Docker VM. This also works for Docker for Windows for getting in Moby Linux VM (doesn't work for Windows Containers).

docker run -it --rm --privileged --pid=host justincormack/nsenter1

more info: https://github.com/justincormack/nsenter1

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Thrilleratplay

Installing Arch Linux on a fully encrypted LUKS partition using GRUB

---

This is a modified version of Installing Arch Linux on an LUKS Encrypted root and booting from UEFI.

Sources

• Gist mattiaslundberg / arch-linux-install
• HOWTO: Disk encryption with dm-crypt / LUKS and Debian
• Full disk encryption with LUKS (including /boot)

Before you begin

KodrAus

Profiling performance

Using perf:

$ perf record -g binary
$ perf script | stackcollapse-perf.pl | rust-unmangle | flamegraph.pl > flame.svg

NOTE: See @GabrielMajeri's comments below about the -g option.

psanford

These are my notes for connecting to a meraki client vpn from ubuntu 16.04. This configuration assumes you are using a psk for the ipsec auth.

Install the following packages:

apt-get install -y strongswan xl2tpd

Configure strong swan

mvidner

Signal handling and Ruby

Salvaged from Google Cache of http://www.lps-it.fr/blog/20151218-signal-handling-and-ruby.html

December 18, 2015
Linux Ruby

Since version 2.0.0, signal handling in Ruby can be tricky. I bet if you're here, it's because you've seen this error message :

Chandler

print("UPDATE AUG 2023: this script is beyond old and broken")
print("You may find interesting and more up to date resources in the comments of the gist")
exit()
      
from slacker import Slacker
import json
import argparse
import os

# This script finds all channels, private channels and direct messages