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Yasin KARABULAK unique1984

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@bert
bert / README
Created July 15, 2011 21:01
Bresenham Algorithms in C
Some possible implementations of the Bresenham Algorithms in C.
The Bresenham line algorithm is an algorithm which determines which points in an
n-dimensional raster should be plotted in order to form a close approximation
to a straight line between two given points.
It is commonly used to draw lines on a computer screen, as it uses only integer
addition, subtraction and bit shifting, all of which are very cheap operations
in standard computer architectures.
It is one of the earliest algorithms developed in the field of computer graphics.
A minor extension to the original algorithm also deals with drawing circles.
@brock
brock / psql-with-gzip-cheatsheet.sh
Last active June 27, 2024 10:09
Exporting and Importing Postgres Databases using gzip
# This is just a cheat sheet:
# On production
sudo -u postgres pg_dump database | gzip -9 > database.sql.gz
# On local
scp -C production:~/database.sql.gz
dropdb database && createdb database
gunzip < database.sql.gz | psql database
@mustafaturan
mustafaturan / network-tweak.md
Last active June 16, 2024 21:58
Linux Network Tweak for 2 million web socket connections

Sample config for 2 million web socket connection

    sysctl -w fs.file-max=12000500
    sysctl -w fs.nr_open=20000500
    # Set the maximum number of open file descriptors
    ulimit -n 20000000

    # Set the memory size for TCP with minimum, default and maximum thresholds 
 sysctl -w net.ipv4.tcp_mem='10000000 10000000 10000000'
# This xorg configuration file will start a dummy X11 server.
# move it to /etc/X11/xorg.conf
# don't forget apt install xserver-xorg-video-dummy;
# based on https://xpra.org/Xdummy.html
Section "ServerFlags"
Option "DontVTSwitch" "true"
Option "AllowMouseOpenFail" "true"
Option "PciForceNone" "true"
Option "AutoEnableDevices" "false"
@timcheadle
timcheadle / server.conf
Last active April 19, 2024 09:53
SSL nginx config example
server {
listen 80;
server_name www.example.com example.com;
# Redirect all traffic to SSL
rewrite ^ https://$host$request_uri? permanent;
}
server {
listen 443 ssl default_server;
@unique1984
unique1984 / installer.sh
Last active November 24, 2023 21:00
OpenZFS - ZFS as a Root File System on Debian Bullseye
#!/usr/bin/env bash
###########################################################################################################
# Bash Script of this Documentation :
# https://openzfs.github.io/openzfs-docs/Getting%20Started/Debian/Debian%20Bullseye%20Root%20on%20ZFS.html#debian-bullseye-root-on-zfs
#
# Copyright © 2022 - installer.sh
# Yasin Karabulak
# info@yasinkarabulak.com
# https://github.com/unique1984
#
@mrothNET
mrothNET / LetsEncrypt+certbot+UFW+postfix+dovecot.md
Last active October 27, 2023 00:36
Let's Encrypt / Dovecot / Postfix / UFW firewall / Certbot

Let's Encrypt / Dovecot / Postfix / UFW firewall / Certbot

This tutorial describes how to install TLS to a mail server consisting of Postfix and/or Dovecot by using Let's Encrypt certificates with automatic renewing and firewall management.

The system used for this tutorial was:

$ lsb_release -idrc
Distributor ID: Ubuntu
@CanNuhlar
CanNuhlar / TDK_Scraper.py
Created August 2, 2018 19:57
Created from terminal
# -*- coding: utf-8 -*-
import requests
from HTMLParser import HTMLParser
import re
class PageNumParser(HTMLParser):
def handle_data(self, data):
if "sayfanın" in data:
getContent(int(re.search(r'\d+', data).group()))
class wordParser(HTMLParser):
@tlhunter
tlhunter / average-geolocation.js
Created May 17, 2017 18:00
Calculate the center/average of multiple GeoLocation coordinates
/**
* Calculate the center/average of multiple GeoLocation coordinates
* Expects an array of objects with .latitude and .longitude properties
*
* @url http://stackoverflow.com/a/14231286/538646
*/
function averageGeolocation(coords) {
if (coords.length === 1) {
return coords[0];
}
@ianmackinnon
ianmackinnon / match.c
Created August 8, 2012 12:01
C Regex multiple matches and groups example
# gcc -Wall -o match match.c && ./match
#
#include <stdio.h>
#include <string.h>
#include <regex.h>