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@piscisaureus
piscisaureus / pr.md
Created August 13, 2012 16:12
Checkout github pull requests locally

Locate the section for your github remote in the .git/config file. It looks like this:

[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = [email protected]:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:

@skyebook
skyebook / backup_postgres.sh
Last active April 16, 2016 13:20
Backup OpenShift PostgreSQL Database
#!/bin/bash
# Backs up the OpenShift PostgreSQL database for this application
# by Skye Book <[email protected]>
NOW="$(date +"%Y-%m-%d")"
FILENAME="$OPENSHIFT_DATA_DIR/$OPENSHIFT_APP_NAME.$NOW.backup.sql.gz"
pg_dump $OPENSHIFT_APP_NAME | gzip > $FILENAME
@mycodeschool
mycodeschool / DoublyLinkedList.c
Created November 12, 2013 11:38
Doubly Linked List implementation in C
/* Doubly Linked List implementation */
#include<stdio.h>
#include<stdlib.h>
struct Node {
int data;
struct Node* next;
struct Node* prev;
};
@jordoh
jordoh / entity.lua
Last active May 22, 2022 22:08
Starbound lua API
--- Stubs for entity.* callbacks defined in C++.
--
-- DO NOT INCLUDE this file in your scripts, it is for documentation purposes only.
--
-- Entity callbacks query and mutate the specific entity that is running the
-- lua script. They can be called from a _different_ entity using
-- world.callScriptedEntity(targetEntityId, "entity.*"), replacing "*" with the
-- name of a function defined below.
--
-- Specific types of entities (e.g. NPCs, Objects) define different sets of
title description date categories slug
QQ协议分析
QQ协议分析
2014-04-16
protocol
qq-protocol

一. 文字聊天协议族(TCPF, Text Chatting Protocol Family)

#!/bin/bash
# Backs up the OpenShift PostgreSQL database for this application
# by Skye Book <[email protected]>
NOW="$(date +"%Y-%m-%d")"
FILENAME="$OPENSHIFT_DATA_DIR/$OPENSHIFT_APP_NAME.$NOW.backup.sql.gz"
find $OPENSHIFT_DATA_DIR -name $OPENSHIFT_APP_NAME.*backup* -type f -mtime +30 -exec rm '{}' \;
pg_dump $OPENSHIFT_APP_NAME | gzip > $FILENAME
@laurenarcher
laurenarcher / livestreamingyoutube
Created November 21, 2014 14:13
Livestreaming to Youtube Live, Ubuntu, Linux FFMPEG
Terminal Commands:
One webcam:
ffmpeg -f alsa -ac 2 -i hw:1,0 -f v4l2 -s 1280x720 -r 10 -i /dev/video1 -vcodec libx264 -pix_fmt yuv420p -preset ultrafast -r 25 -g 20 -b:v 2500k -codec:a libmp3lame -ar 44100 -threads 6 -b:a 11025 -bufsize 512k -f flv rtmp://a.rtmp.youtube.com/live2/YOURSTREAMNAMEHERE
Two webcam overlay:
ffmpeg -f alsa -ac 2 -i hw:1,0 -f v4l2 -s 1280x720 -r 10 -i /dev/video1 -f v4l2 -s 320x240 -r 10 -i /dev/video0 -filter_complex "[1:v]setpts=PTS-STARTPTS[bg]; [2:v]setpts=PTS-STARTPTS[fg]; [bg][fg]overlay=shortest=1 [out]" -map "[out]" -map 0:a -vcodec libx264 -pix_fmt yuv420p -preset veryfast -r 25 -g 20 -b:v 2500k -codec:a libmp3lame -ar 44100 -threads 6 -b:a 11025 -bufsize 512k -f flv rtmp://a.rtmp.youtube.com/live2/YOURSTREAMNAMEHERE
@joyrexus
joyrexus / README.md
Last active September 3, 2025 20:43
Greiner-Hormann algorithm

I've heard a number of people praise the Greiner-Hormann algorithm for clipping arbitrary polygons. They say it has a certain conceptual simplicity and elegance.

@jasondavies is utilizing Greiner-Hormann for D3's polygon clipping operations (2D and spherical). He recently gave a demo of boolean operations on polygons based on as-of-yet unreleased work here.

His earlier clipping demos can be found here and here.

@w8r has a nice, clean implementation of the algorithm for 2D clipping operations with no dependencies. He provides an adapter for clipping polygon regions defin

@tishion
tishion / ModFog.cpp
Last active February 21, 2019 14:55
/**
** tishion#163.com
** 2016-01-28 18:52:34
**/
PLDR_DATA_TABLE_ENTRY GetModuleEntryInLoadOrderModuleList(HMODULE hMod)
{
PPEB pPeb = NULL;
// Get the base address of PEB struct

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