Sangkon, Han sigmadream

HTTPS 인증서

certbot를 사용해서 인증서 발급

sudo certbot certonly --manual --preferred-challenges dns -d "*.codemetrics.app" -d "codemetrics.app"

Saving debug log to /var/log/letsencrypt/letsencrypt.log
Requesting a certificate for *.codemetrics.app and codemetrics.app

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Ubuntu에서 Flutter 개발 환경 구성 하는 방법

JDK 설치

$ sudo apt install default-jdk

Android Studio 설치

Haskell

module MyList where

data MyList a = Cons a (MyList a) 
                | MyNil deriving (Show, Eq)

myHead :: MyList a -> a
myHead l = case l of
        Cons a _ -> a

$ sudo apt install postgresql postgresql-contrib
$ sudo service postgresql start
$ sudo -i -u postgres # postgres에 접속
# create user sd password 'qwer1234' superuser;
# create database sd owner sd;
$ sudo vi vi /etc/postgresql/14/main/pg_hba.conf => `peer`을 `md5`로 수정
$ sudo apt-get -y install postgresql-14-cron
$ sudo vi /etc/postgresql/14/main/postgresql.conf

파일 결합

텍스트 파일

import pandas as pd
from glob import glob

if __name__ == "__main__":
    files = glob("./data/**/**/*")
    df_list = []

	<!DOCTYPE html>
	<html lang="en">

	<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>My Angular from Scratch</title>
	<style>
	.my-component {
	font-family: Arial, sans-serif;

	[
	{
	"name": "Bulbasaur",
	"id": "#001",
	"imageurl": "https://assets.pokemon.com/assets/cms2/img/pokedex/full/001.png",
	"xdescription": "Bulbasaur can be seen napping in bright sunlight. There is a seed on its back. By soaking up the sun's rays, the seed grows progressively larger.",
	"ydescription": "Bulbasaur can be seen napping in bright sunlight. There is a seed on its back. By soaking up the sun's rays, the seed grows progressively larger.",
	"height": "2' 04\"",
	"category": "Seed",
	"weight": "15.2 lbs",

	import numpy as np
	import networkx as nx
	import matplotlib.pyplot as plt

	def back_substitution(U,Y):
	'''
	back_substitution(U,Y)

	back_substitution은 역치환을 수행하여 UX = Y의 해를 구합니다.
	U가 전체 순위인지 확인하기 위해 오류를 검사하지 않습니다.

	from IPython.display import set_matplotlib_formats, display
	import pandas as pd
	import numpy as np
	import matplotlib.pyplot as plt
	import mglearn
	from mglearn import plot_helpers
	from cycler import cycler

	set_matplotlib_formats('pdf', 'png')
	plt.rcParams['savefig.dpi'] = 300