Byungjin Park (Claud) posquit0

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Powerlevel10k

Often referred to as the "swiss army of knife" for TCP/IP networking, [Netcat][1] is an extremely versatile Linux utility that allows you to do anything under the sun using TCP/UDP sockets. It is one of the most favorite tools for system admins when they need to do networking related troubleshooting and experimentation.

In this tutorial, I am sharing a few useful netcat examples, although the sky is the limit when it comes to possible netcat use cases. If you are using netcat regularly, feel free to share your use case.

Note that when you are binding to well-known ports (0-1023) with nc, you need root privilege. Otherwise, run nc as a normal user.

1. Test if a particular TCP port of a remote host is open.

$ nc -vn 192.168.233.208 5000

EMOJI CHEAT SHEET

Emoji emoticons listed on this page are supported on Campfire, GitHub, Basecamp, Redbooth, Trac, Flowdock, Sprint.ly, Kandan, Textbox.io, Kippt, Redmine, JabbR, Trello, Hall, plug.dj, Qiita, Zendesk, Ruby China, Grove, Idobata, NodeBB Forums, Slack, Streamup, OrganisedMinds, Hackpad, Cryptbin, Kato, Reportedly, Cheerful Ghost, IRCCloud, Dashcube, MyVideoGameList, Subrosa, Sococo, Quip, And Bang, Bonusly, Discourse, Ello, and Twemoji Awesome. However some of the emoji codes are not super easy to remember, so here is a little cheat sheet. ✈ Got flash enabled? Click the emoji code and it will be copied to your clipboard.

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React "Hello World" Examples

Below are a small collection of React examples to get anyone started using React. They progress from simpler to more complex/full featured.

They will hopefully get you over the initial learning curve of the hard parts of React (JSX, props vs. state, lifecycle events, etc).

Usage

You will want to create an index.html file and copy/paste the contents of 1-base.html and then create a scripts.js file and copy/paste the contents of one of the examples into it.

The Ultimate Unit Testing Cheat-sheet

Sinon Chai
Chai
Sinon

Hi Nicholas,

I saw you tweet about JSX yesterday. It seemed like the discussion devolved pretty quickly but I wanted to share our experience over the last year. I understand your concerns. I've made similar remarks about JSX. When we started using it Planning Center, I led the charge to write React without it. I don't imagine I'd have much to say that you haven't considered but, if it's helpful, here's a pattern that changed my opinion:

The idea that "React is the V in MVC" is disingenuous. It's a good pitch but, for many of us, it feels like in invitation to repeat our history of coupled views. In practice, React is the V and the C. Dan Abramov describes the division as Smart and Dumb Components. At our office, we call them stateless and container components (view-controllers if we're Flux). The idea is pretty simple: components can't

	# Add the Oracle JDK Repos
	UBUNTU_VERSION=precise
	echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu ${UBUNTU_VERSION} main" \| tee /etc/apt/sources.list.d/webupd8team-java.list
	echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu ${UBUNTU_VERSION} main" \| tee -a /etc/apt/sources.list.d/webupd8team-java.list
	apt-key adv --keyserver keyserver.ubuntu.com --recv-keys EEA14886
	DEBIAN_FRONTEND="noninteractive" apt-get update

	# Accept the Oracle License
	echo "oracle-java7-installer shared/accepted-oracle-license-v1-1 boolean true" > /tmp/oracle-license-debconf
	/usr/bin/debconf-set-selections /tmp/oracle-license-debconf

	#!/usr/bin/env bash
	#
	# Get the value of a tag for a running EC2 instance.
	#
	# This can be useful within bootstrapping scripts ("user-data").
	#
	# Note the EC3 instance needs to have an IAM role that lets it read tags. The policy
	# JSON for this looks like:
	#
	# {

	apt-get install python2.7-dev python2.7
	apt-get build-dep gdb
	apt-get source gdb
	sed -i -E "s\|python3\|/usr/bin/python2.7\|" debian/rules
	dpkg-buildpackage -uc -us -j8
	dpkg-install ../*.deb

	#!/bin/sh

	STAGED_FILES=$(git diff --cached --name-only --diff-filter=ACM \| grep ".jsx\{0,1\}$")

	if [[ "$STAGED_FILES" = "" ]]; then
	exit 0
	fi

	PASS=true