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Bucket Policy

Bucket policy is an access policy available for you to grant anonymous permissions to your Minio resources. Bucket policy uses JSON-based access policy language.

This section presents a few examples of typical use cases for bucket policies. The policies use testbucket strings in the resource value. To test these policies, you need to replace these strings with your bucket name. For more information please read Amazon S3 access policy language

Granting Read-Only Permission to an Anonymous User

The following example policy grants the s3:GetObject permission to any public anonymous users. This permission allows anyone to read the object data under testbucket, which is useful for when you have publicly readable assets. A typical example is a website assets stored in testbucket.

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#!/bin/bash

parse_time() {
    IFS=' ' read -ra PART <<< "$1"
	seconds=0
    for i in "${PART[@]}"; do
		number=$(expr match $i '\([0-9]\+\)')
		unit=$(expr match $i '[0-9]*\([a-z]\+\)')
		case $unit in
			h)

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A Relatively Secure Server Stack Setup in Ubuntu 16.04 LTS

Anup Dhakal

Sagar Chamling

Introduction

In this guide, LEPP stands for Linux, Nginx (pronounced as Engine-X) , Postgres and PHP (PHP Hypertext Preprocessor).

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Safest way to clean up boot partition - Ubuntu 14.04LTS-x64

Reference

Case I: if /boot is not 100% full and apt is working

1. Check the current kernel version

$ uname -r 

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#!/bin/bash
aria2c -j5 -i list.txt -c --save-session out.txt
has_error=`wc -l < out.txt`

while [ $has_error -gt 0 ]
do
  echo "still has $has_error errors, rerun aria2 to download ..."
  aria2c -j5 -i list.txt -c --save-session out.txt
  has_error=`wc -l < out.txt`
  sleep 10

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//[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17] => [[1, 2, 3], [4, 5, 6], [7, 8, 9], [10, 11, 12], [13, 14, 15], [16, 17]]
function grouped(arr, limit){
 return arr.map((data, index) => {
   return index % limit === 0 ? arr.slice(index, index + limit) : null; 
 }).filter((item) => { return item; })
}

//range crete [0,1,2,3,4...number]
function range(number){
 return Array.from(new Array(number), (x,i) => i)

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# Based on:
# http://www.zackarychapple.guru/chrome/2016/08/24/chrome-headless.html
# https://www.chromium.org/developers/how-tos/get-the-code
# https://chromium.googlesource.com/chromium/src/+/lkgr/headless/README.md

apt-get update
apt-get install -y curl git htop man unzip vim wget python
git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
export PATH=$PATH:`pwd`/depot_tools
mkdir Chromium && cd Chromium

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# E.g. TaskClass = CaseClass('name', 'owner', 'pid')
# task1 = TaskClass(name = "hello", owner = "brian", pid = 15)
# task2 = TaskClass(name = "world", owner = "brian", pid = 13)
# tasks = [task1, task2]
# 
# filter(lambda task: task.where(owner = "brian"), tasks) => [task1, task2]
# filter(lambda task: task.where(owner = "brian", pid = 13), tasks) => [task2]
# 
# matcher = TaskClass(pid = 13)
# filter(lambda task: task.match(matcher), tasks) => [task2]

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import akka.actor._
import akka.stream.scaladsl.Flow
import org.apache.spark.streaming.dstream.ReceiverInputDStream
import org.apache.spark.streaming.receiver.ActorHelper
import akka.actor.{ ExtensionKey, Extension, ExtendedActorSystem }

import scala.reflect.ClassTag

object AkkaStreamSparkIntegration {

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package tech.webstar.utils
import scala.collection.mutable

/**
  * @author sasajib
  */
trait BoundedQueue[A] extends mutable.Queue[A] {
    def maxSize: Int

    override def +=(a: A): this.type = {