Taehong Kim peppy0510

Convert MP4 file to animated WEBP file in ffmpeg CLI

1. Install ffmpeg CLI through homebrew

In terminal.app, install ffmpeg through homebrew

brew install ffmpeg

Validate the installation:

Ionic Android Development on WSL

Installing the required software

Execute the following commands to install Node, npm, git, Java, Ionic, Cordova and Angular CLI:

cd ~
sudo apt update
sudo apt upgrade

What I actually did

/etc/security/limits.conf

elasticsearch hard memlock 100000

/etc/default/elasticsearch

Building a react native app in WSL2

Install, build and debug a react native app in WSL2 (Windows Subsystem for Linux) and Ubuntu.

Install tools in Windows
Install tools in WSL2
Create android virtual device in Windows
Start android virtual device in Windows
Start adb server in Windows
Enable access to adb server from WSL2

How to automatically start ssh server on boot on Windows Subsystem for Linux

Microsoft partnered with Canonical to create Bash on Ubuntu on Windows, running through a technology called the Windows Subsystem for Linux. Below are instructions on how to set up the ssh server to run automatically at boot.

Edit the /etc/ssh/sshd_config file by running the command sudo vi /etc/ssh/sshd_config and do the following
1. Change Port to 2222 (or any other port above 1000)
2. Change PasswordAuthentication to yes. This can be changed back to no if ssh keys are setup.
Restart the ssh server:
- sudo service ssh --full-restart
With this setup, the ssh server must be turned on every time you run Bash on Ubuntu on Windows, as by default it is off. Use this command to turn it on:

Status code 참고

http://guides.rubyonrails.org/layouts_and_rendering.html#the-status-option

자주 사용하는 status code

200 - ok
- request 성공
- ex) resource 목록/resource 상세/resource 수정/그외 대부분의 API 성공
201 - create
- request 성공
- ex) resource 생성 성공

FFmpeg cheat sheet

A list of useful commands for the ffmpeg command line tool.

Download FFmpeg: https://www.ffmpeg.org/download.html

Full documentation: https://www.ffmpeg.org/ffmpeg.html

	# Optimized MySQL configuration for cPanel servers by Kani Baspinar - Updated June 2016
	#
	# The settings provided below are a starting point for a 24GB RAM server with 8 CPU cores.
	# If you have less or more resources available you MUST adjust accordingly to save CPU, RAM and disk I/O usage.
	# To fine tune these settings for your system, use MySQL DB diagnostics tools like:
	# Test your configuration ; https://launchpad.net/mysql-tuning-primer
	# or
	# http://blog.mysqltuner.com/download/
	# Note that if there is NO comment beside a setting, then you don't need to adjust it.
	#

	# === Optimized my.cnf configuration for MySQL/MariaDB (on Ubuntu, CentOS, Almalinux etc. servers) ===
	#
	# by Fotis Evangelou, developer of Engintron (engintron.com)
	#
	# ~ Updated December 2021 ~
	#
	#
	# 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.
	#

	Originall From: Posted 2015-05-29 http://ubwg.net/b/full-list-of-ffmpeg-flags-and-options

	This is the complete list that’s outputted by ffmpeg when running ffmpeg -h full.

	usage: ffmpeg [options] [[infile options] -i infile]… {[outfile options] outfile}…

	Getting help:
	-h — print basic options
	-h long — print more options
	-h full — print all options (including all format and codec specific options, very long)