nerdalert

Linux NetFilter, IP Tables and Conntrack Diagrams

IPTABLES TABLES and CHAINS

IPTables has the following 4 built-in tables.

1) Filter Table

Filter is default table for iptables. So, if you don’t define you own table, you’ll be using filter table. Iptables’s filter table has the following built-in chains.

luugiathuy

upstream app_name {
  server unix:///tmp/app_name.sock;
}

server {
  listen 80;

  server_name example.com; # change to match your URL
  root /rails/app/folder/public; # change to match your rails app public folder

luugiathuy

upstream app_name {
  server unix:///tmp/app_name.sock;
}

server {
  listen 80;
  server_name www.example.com;
  return 301 $scheme://example.com$request_uri;
}

LordZamy

package main

import (
    "fmt"
)

func main() {
    A := []int{3, 5, 1, 6, 1, 7, 2, 4, 5}
    fmt.Println(sort(A))
}

jmoiron

package main

import (
	"fmt"
	"io"
	"net/http"
	"os"
)

func init() {

kovacshuni

require 'base64'
require 'cgi'
require 'openssl'

base = 'POST&https%3A%2F%2Fapi.twitter.com%2F1%2Fstatuses%2Fupdate.json&include_entities%3Dtrue%26oauth_consumer_key%3Dxvz1evFS4wEEPTGEFPHBog%26oauth_nonce%3DkYjzVBB8Y0ZFabxSWbWovY3uYSQ2pTgmZeNu2VS4cg%26oauth_signature_method%3DHMAC-SHA1%26oauth_timestamp%3D1318622958%26oauth_token%3D370773112-GmHxMAgYyLbNEtIKZeRNFsMKPR9EyMZeS9weJAEb%26oauth_version%3D1.0%26status%3DHello%2520Ladies%2520%252B%2520Gentlemen%252C%2520a%2520signed%2520OAuth%2520request%2521'
key = 'kAcSOqF21Fu85e7zjz7ZN2U4ZRhfV3WpwPAoE3Z7kBw&LswwdoUaIvS8ltyTt5jkRh4J50vUPVVHtR2YPi5kE'

puts CGI.escape(Base64.encode64("#{OpenSSL::HMAC.digest('sha1', key, base)}\n"))

jalquisola

#Add gem into Gemfile and do bundle install

gem "capistrano-sidekiq"

#replace "require 'sidekiq/capistrano'" in Capfile
require 'capistrano/sidekiq'

Integralist

hash = { 'foo' => 'bar' }

# Version 1
hash = Hash[hash.map { |k, v| [k.to_sym, v] }]

# Version 2
hash = hash.reduce({}) do |memo, (k, v)| 
  memo.tap { |m| m[k.to_sym] = v }
end

ivanoats

# .railsrc
-B #Skip Bundle
-T #Skip Test-Unit
-d postgresql #Use postgres

RaVbaker

To open SQLite Things.app database run this command in Terminal.app:

$ sqlite3 ~/Library/Containers/com.culturedcode.things/Data/Library/Application\ Support/Cultured\ Code/Things/ThingsLibrary.db

In SQLite command-line type this query to get your tasks stats:

sqlite> .mode column
sqlite> .header on
sqlite> select zscheduler, zstatus, ztrashed, count(*) from ZTHING where z_ent = 13 group by  zstatus,ztrashed order by Z_pk desc;

ZSCHEDULER ZSTATUS ZTRASHED count(*)