Byungwoo Jeon byung-u

In the below keyboard shortcuts, I use the capital letters for reading clarity but this does not imply shift, if shift is needed, I will say shift. So ⌘ + D does not mean hold shift. ⌘ + Shift + D does of course.

Tabs and Windows

Function	Shortcut
New Tab	`⌘` + `T`
Close Tab or Window	`⌘` + `W` (same as many mac apps)
Go to Tab	`⌘` + `Number Key` (ie: `⌘2` is 2nd tab)
Go to Split Pane by Direction	`⌘` + `Option` + `Arrow Key`

Requirements

no upfront installation/agents on remote/slave machines - ssh should be enough
application components should use third-party software, e.g. HDFS, Spark's cluster, deployed separately
configuration templating
environment requires/asserts, i.e. we need a JVM in a given version before doing deployment
deployment process run from Jenkins

Solution

ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

You can get the list of installed codecs with:

Installing Kerberos on Redhat 7

This installation is going to require 2 servers one acts as kerberos KDC server and the other machine is going to be client. Lets assume the FQDN's are (here cw.com is the domain name, make a note of the domain name here):

Kerberos KDC Server: kdc.cw.com
Kerberos Client: kclient.cw.com

Important: Make sure that both systems have their hostnames properly set and both systems have the hostnames and IP addresses of both systems in

	/**
	* Solves the n-Queen puzzle in O(n!)
	* Let p[r] be the column of the queen on the rth row (must be exactly 1 queen per row)
	* There also must be exactly 1 queen per column and hence p must be a permuation of (0 until n)
	* There must be n distinct (col + diag) and n distinct (col - diag) for each queen (else bishop attacks)
	* @return returns a Iterator of solutions
	* Each solution is an array p of length n such that p[i] is the column of the queen on the ith row
	*/
	def nQueens(n: Int): Iterator[Seq[Int]] =
	(0 until n)

	brew install ffmpeg \
	--with-dcadec \
	--with-faac \
	--with-fdk-aac \
	--with-ffplay \
	--with-fontconfig \
	--with-freetype \
	--with-frei0r \
	--with-libass \
	--with-libbluray \

	#!/usr/bin/env python
	# -- coding: UTF-8 --
	# Author : tintinweb@oststrom.com <github.com/tintinweb>
	'''
	A simple TCP three-way handshake example

	#> python scapy_tcp_handshake.py
	DEBUG:__main__:init: ('oststrom.com', 80)
	DEBUG:__main__:start
	DEBUG:__main__:SND: SYN

	# === Optimized my.cnf configuration for MySQL/MariaDB (on Ubuntu, CentOS, Almalinux etc. servers) ===
	#
	# by Fotis Evangelou, developer of Engintron (engintron.com)
	#
	# ~ Updated September 2024 ~
	#
	#
	# The settings provided below are a starting point for a 8-16 GB RAM server with 4-8 CPU cores.
	# If you have different resources available you should adjust accordingly to save CPU, RAM & disk I/O usage.
	#

	# fshow - git commit browser (enter for show, ctrl-d for diff, ` toggles sort)
	fshow() {
	local out shas sha q k
	while out=$(
	git log --graph --color=always \
	--format="%C(auto)%h%d %s %C(black)%C(bold)%cr" "$@" \|
	fzf --ansi --multi --no-sort --reverse --query="$q" \
	--print-query --expect=ctrl-d --toggle-sort=\`); do
	q=$(head -1 <<< "$out")
	k=$(head -2 <<< "$out" \| tail -1)

	__author__ = 'artemr'
	'''
	왜 파이썬 데코레이터를 만들때, @wraps어노테이션을 쓰는 것을 권장하는 걸까?
	이유인 즉슨, 데코레이터 내부에서 인자로 전달받은 함수가 익명함수 처럼 취급되어 버리므로 디버깅이 난해해지는 단점이 있었기 때문이다.
	자세한 설명은 아래의 링크에 첨부되어 있다.

	원본: http://artemrudenko.wordpress.com/2013/04/15/python-why-you-need-to-use-wraps-with-decorators/
	사본: https://www.evernote.com/shard/s174/sh/78eaad5f-a8f2-4496-b984-e3385fb963c0/922d9ab4b5cd23ac7b85aab42536aa4f
	'''