M5RND

Commit Empty Directory Git

Using .gitkeep (Recommended Convention)

The most common and widely accepted method is to create a file named .gitkeep inside the empty directory:

mkdir your-directory
cd your-directory
touch .gitkeep
git add .
git commit -m "Add empty directory with .gitkeep"

M5RND

• Hamal [https://github.com/gsamokovarov/hamal] ={ Hamal is a simple deploy tool for self-hosted Rails applications. }

M5RND

# includes = preload

> User.includes(:merchants)
  User Load (0.7ms)  SELECT "users".* FROM "users"
  HABTM_Merchants Load (0.9ms)  SELECT "merchants_users".* FROM "merchants_users" WHERE "merchants_users"."user_id" IN (3, 1, 2)
  Merchant Load (0.7ms)  SELECT "merchants".* FROM "merchants" WHERE "merchants"."id" IN (2, 118, 1, 5)

> User.preload(:merchants)
  User Load (0.8ms)  SELECT "users".* FROM "users"
  HABTM_Merchants Load (0.8ms)  SELECT "merchants_users".* FROM "merchants_users" WHERE "merchants_users"."user_id" IN (3, 1, 2)

M5RND

#!/bin/sh

tar -xvf jdk-8*
sudo mkdir /usr/lib/jvm
sudo mv ./jdk1.8* /usr/lib/jvm/jdk1.8.0
sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/jdk1.8.0/bin/java" 1
sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/jdk1.8.0/bin/javac" 1
sudo update-alternatives --install "/usr/bin/javaws" "javaws" "/usr/lib/jvm/jdk1.8.0/bin/javaws" 1
sudo chmod a+x /usr/bin/java
sudo chmod a+x /usr/bin/javac

M5RND

# Singleton with ThreadSafe::Cache

require 'thread_safe'

module ActiveSupport
  module Inflector
    extend self

    # A singleton instance of this class is yielded by Inflector.inflections,
    # which can then be used to specify additional inflection rules. If passed

M5RND

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://www.opentravel.org/OTA/2003/05" targetNamespace="http://www.opentravel.org/OTA/2003/05" elementFormDefault="qualified" version="1.008" id="OTA2007A">
	<xs:include schemaLocation="OTA_VehicleCommonTypes.xsd"/>
	
	
	
	
	<xs:annotation>
		<xs:documentation xml:lang="en">All Schema files in the OTA specification are made available according to the terms defined by the OTA License Agreement at http://www.opentravel.org/ota_downloads_form.cfm</xs:documentation>
	</xs:annotation>

M5RND

require 'ostruct'

# DeepStruct with some Array support

class DeepStruct < OpenStruct
  def initialize(hash = nil)
    @table = {}
    @hash_table = {}
    if hash && hash.is_a?(Hash)
      hash.each do |k,v|

M5RND

# gzipped json-stored hash unpack
require 'zlib'
data = Zlib::GzipReader.open("i18n.json.gz") {|gz| gz.read}
h = JSON.parse(data)

# rails console
ActiveRecord::Base.logger = Logger.new(STDOUT)

# one-line Postgres EXPLAIN (ANALYZE)
puts ActiveRecord::Base.connection.execute(%Q{ EXPLAIN (ANALYZE) SELECT ...; }).map{|x| x['QUERY PLAN']}.unshift('').join("\n")

M5RND

# Location names mapper

require 'json'
require 'csv'

# [0] "Location ID",
# [1] "Location Code",
# [2] "IATA",
# [3] "Location",
# [4] "City",

M5RND

# misc options
netstat -tnap | grep LIST
htop
iotop
ssh -f -N -L 9379:127.0.0.1:6379 {remote_user}@{remote_host} -p 22222

docker run -d -p 9000:9000 -v /var/run/docker.sock:/var/run/docker.sock dockerui/dockerui
docker unpause dockerui/dockerui
docker ps