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Install

Either copy the aliases from the .gitconfig or run the commands in add-pr-alias.sh

Usage

Easily checkout local copies of pull requests from GitHub remotes:

• git pr 4 - creates local branch pr/4 from the origin remote and checks it out
• git pr 4 upstream - creates local branch pr/4 from upstream remote and checks it out

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Install MySQL on macOS Sierra

This procedure explains how to install MySQL using Homebrew on macOS Sierra 10.12

Install Homebrew

• Installing Homebrew is effortless, open Terminal and enter :
  $ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
• Note: Homebrew will download and install Command Line Tools for Xcode 8.0 as part of the installation process.

Install MySQL

At this time of writing, Homebrew has MySQL version 5.7.15 as default formulae in its main repository :

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>Ansi 0 Color</key>
	<dict>
		<key>Alpha Component</key>
		<real>1</real>
		<key>Blue Component</key>
		<real>0.16470588743686676</real>

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# http://blog.neutrino.es/2012/git-copy-a-file-or-directory-from-another-repository-preserving-history/
mkdir /tmp/mergepatchs
cd ~/repo/org
export reposrc=myfile.c #or mydir
git format-patch -o /tmp/mergepatchs $(git log $reposrc|grep ^commit|tail -1|awk '{print $2}')^..HEAD $reposrc
cd ~/repo/dest
git am /tmp/mergepatchs/*.patch

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#!/bin/bash

for file in *.mp4
do
  new_file=`echo ${file} | cut -d"." -f1`
  echo "Processing: ${new_file}.mp4 -> ${new_file}.gif"
  ffmpeg -i ${new_file}.mp4 -s 600x400 -r 5 -f gif - | gifsicle --optimize=1 --delay=3 > ${new_file}.gif
done

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OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

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# Show database charset
SELECT default_character_set_name FROM information_schema.SCHEMATA 
 WHERE schema_name = "<database>";

# Chase database charset
ALTER DATABASE <database> CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci;

# Show table charset
SELECT CCSA.character_set_name, T.table_name FROM information_schema.`TABLES` T,
       information_schema.`COLLATION_CHARACTER_SET_APPLICABILITY` CCSA

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Parameter	Purpose	Default
yarn.app.mapreduce.am.resource.mb	The physical memory requirement, in MiB, for the ApplicationMaster.	1 GiB
mapreduce.map.memory.mb	The amount of physical memory, in MiB, allocated for each map task of a job.	1 GiB
mapreduce.reduce.memory.mb	The amount of physical memory, in MiB, allocated for each reduce task of a job.	1 GiB
mapreduce.map.java.opts	Java opts for the map processes.	-Djava.net.preferIPv4Stack=true
mapreduce.reduce.java.opts	Java opts for the reduce processes.	-Djava.net.preferIPv4Stack=true
mapred.child.java.opts	Java opts for the map processes. It has been deprecated in Hadoop 2.0.	-Djava.net.preferIPv4Stack=true
yarn.nodemanager.vmem-pmem-ratio	Virtual / physical memory ratio. Virtual memory is allocated based on this ratio	2.1

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Lessons from Scaling to Hundreds of Millions of Users

Tammy Butow presentation on DigitalOcean Tide SF

Before launch

• Kubernetes
  • 3 primaries and 3 nodes
  • Docker containers
  • Load balancer
• Private network

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{
  "\UF729" = "moveToBeginningOfLine:"; /* Home */
  "\UF72B" = "moveToEndOfLine:";       /* End */

  "$\UF729" = "moveToBeginningOfLineAndModifySelection:"; /* Shift + Home */	
  "$\UF72B" = "moveToEndOfLineAndModifySelection:";       /* Shift + End */

  "\UF72C" = "moveToBeginningOfDocument:"; /* PageUp */
  "\UF72D" = "moveToEndOfDocument:";       /* PageDown */
}