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#!/usr/bin/env python
# coding=utf-8
"""Client that demonstrates processing pipeline."""

import asyncio
from functools import partial
import logging

logging.basicConfig(level='DEBUG')

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let g:python_host_skip_check = 1
let g:python3_host_skip_check = 1

let g:python_host_prog = '/usr/local/bin/python2'
let g:python3_host_prog = '/usr/local/bin/python3'

let g:EditorConfig_exec_path = '/usr/local/bin/editorconfig'
let g:EditorConfig_core_mode = 'external_command'

" Deoplete

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development:
  adapter: mysql2
  encoding: utf8
  database: my_database
  username: root
  password:
  apt:
    - somepackage
    - anotherpackage

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# localhost 
sudo tshark -i lo

# or add loopback interface 
sudo ifconfig lo0 alias 127.0.0.0 up
sudo tshark -i lo0

# eth0
sudo tshark -i eth0 -f 'port 80 or 443' -R 'http.host matches ".*?youtube\.com.*"' -S -V -l -T fields -e ip.src -e ip.src_host -e ip.dst -e ip.dst_host -e http.accept -e http.accept_encoding -e http.accept_language -e http.authbasic -e http.authorization -e http.cache_control -e http.connection -e http.content_encoding -e http.content_length -e http.content_length_header -e http.content_type -e http.cookie -e http.date -e http.host -e http.last_modified -e http.location -e http.notification -e http.proxy_authenticate -e http.proxy_authorization -e http.proxy_connect_host -e http.proxy_connect_port -e http.referer -e http.request -e http.request.full_uri -e http.request.method -e http.request.uri -e http.request.version -e http.response -e http.response.code -e http.response.phrase -e http.sec_websocket_accept -e http.sec_websocket_extensions -e http.sec_websocket_key -e http.sec_websock

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Kubectl output options

Let's look at some basic kubectl output options.

Our intention is to list nodes (with their AWS InstanceId) and Pods (sorted by node).

We can start with:

kubectl get no

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days_default = {'월':0, '화':1, '수':2, '목':3, '금':4, '토':5, '일':6}

# input: 0, 1, 2, 4, 6
# output: 0~2, 4, 6

reverse= dict((v, k) for k, v in days_default.items())
def collapse_weekdays(days):
    days = list(map(lambda k: days_default.get(k), days))
    
    shift = lambda n, k: (n + 1 < k and days[n + 1] - days[n] == 1) and shift(n + 1, k) or n

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Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

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FILE SPACING:

 # double space a file
 sed G

 # double space a file which already has blank lines in it. Output file
 # should contain no more than one blank line between lines of text.
 sed '/^$/d;G'

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Setup private Ethereum network with Docker

Ethereum is a decentralized platform that runs smart contracts: applications that run exactly as programmed without any possibility of downtime, censorship, fraud or third party interference.

This is a step-by-step guide, how to setup private Ethereum network. 

We’ll set up a network and create two simple JSON-RPC clients in order to communicate with our Ethereum nodes.

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def sha256_encode(secret, password):
    """
    Spring Security 모듈의 StandardPasswordEncoder encode() 함수를 구현

    :param secret:
    :param password:
    :return:
    """
    salt_key_length = 8
    max_hash_rounds = 1024