mokua

https://py7zr.readthedocs.io/en/latest/user_guide.html

pip install py7zr

python -m py7zr x /kaggle/input/cifar-10/test.7z /kaggle/data/cifar-10/
python -m py7zr x /kaggle/input/cifar-10/train.7z /kaggle/data/cifar-10/

mokua

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

mokua

Variables and Mutability
-------------
let x = 9; // immutable variable
//x = 10 // error can assign to a mutable variable

let mut y = 19; //mutable variable 

y = 20; //we can assign another value 

//constants

mokua

I use PostgreSQL via the psql client. If you use a different client (eg. pgAdmin, etc.), I don't know how much will translate over.

One nice difference between psql and mysql (cli) is that if you press CTRL+C, it won't exit the client.

User administration

Login as superuser (via shell)

psql -U postgres

mokua

#!/bin/bash

domains=(test.domain.com www.test.domain.com)
rsa_key_size=4096
data_path="./data/certbot"
email="put-email-address" # Adding a valid address is strongly recommended
staging=1 # Set to 1 if you're testing your setup to avoid hitting request limits

if [ -d "$data_path" ]; then
  read -p "Existing data found for $domains. Continue and replace existing certificate? (y/N) " decision

mokua

brew install coreutils
export PATH="/usr/local/opt/coreutils/libexec/gnubin:$PATH"

mokua

package main

import (
	"crypto/tls"
	"crypto/x509"
	"flag"
	"io"
	"io/ioutil"
	"log"
	"os"

mokua

install kind https://kind.sigs.k8s.io/ 
get k8s source code : go get -d k8s.io/kubernetes
build the k8s image: kind build node-image --image=local:master
create a cluster using the image: kind create cluster --config kind-config.yaml --image=local:master
test the cluster : kubectl create deployment nginx --image=nginx 

mokua

<subsystem xmlns="urn:jboss:domain:undertow:4.0">
            <buffer-cache name="default"/>
            <server name="default-server">
                <http-listener name="default" socket-binding="http" redirect-socket="https" enable-http2="true"/>
                <https-listener name="https" socket-binding="https" security-realm="ApplicationRealm" enable-http2="true"/>
                <host name="default-host" alias="localhost">
                    <location name="/" handler="welcome-content"/>
                    <filter-ref name="server-header"/>
                    <filter-ref name="x-powered-by-header"/>
                    <filter-ref name="gzipFilter" predicate="regex[pattern='text/html|text/css|application/javascript|application/json|image/jpeg|application/octet-stream|image/png|application/font-woff2',value=%{o,Content-Type}] and max-content-size[value=1024]"/>