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Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

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Kubernetes commands

Edit an existing secret using an external env file

kubectl create secret generic <secret-name> --from-env-file=.env.prod --dry-run -o yaml | kubectl apply -f -

Copy secret from one namespace to another

kubectl get secret mysecret --namespace=default --export -o yaml | kubectl apply --namespace=dev -f -

Delete all evicted pods

kubectl get pods | grep Evicted | awk '{print $1}' | xargs kubectl delete pod

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eslint cheatsheet

Configuring rules

Disable eslint check for the next line:

// eslint-disable-next-line no-use-before-define
var thing = new Thing();

Current line:

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See also, http://libraryofalexandria.io/cgo/

Using Go cgo

cgo has a lot of trap.
but Not "C" pkg also directory in $GOROOT/src. IDE's(vim) Goto command not works.

So, Here collect materials.

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Type C	Call method	Go type	Bytes (byte)	Numerical range
char	C.char	byte	1	-128~127
signed char	C.schar	int8	1	-128~127
unsigned char	C.uchar	uint8	1	0~255
short int	C.short	int16	2	-32768~32767
short unsigned int	C.ushort	uint16	2	0~65535
int	C.int	int	4	-2147483648~2147483647
unsigned int	C.uint	uint32	4	0~4294967295
long int	C.long	int32 or int64	4	-2147483648~2147483647

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=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

BrainFuck Programming Tutorial by: Katie

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

INTRODUCTION

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Extracting WPA(2)-Enterprise credentials

Step by step guide for n00bs.

Requirements

Make sure you have the following software installed:

• EnterpriseWifiPasswordRecover (download release build or compile it yourself)
• psexec (download & extract the zip. Optionally you can add the location to your PATH variable)

Guide

Open cmd as administrator, navigate to the directory where you downloaded the extractor tool and run it for the first time:

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Identifying TLS/SSL cipher suites

A few methods to identify TLS/SSL cipher suites of a website.

nmap

nmap -Pn -p 443 --script=ssl-enum-ciphers <domain or ip>

python

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
ssl_sock = ssl.wrap_socket(s,cert_reqs=ssl.CERT_REQUIRED, ca_certs='/etc/ssl/certs/ca-certificates.crt')

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PimpMyStremio on android

This guide teaches you how to install PimpMystremio on your android device. Please keep in mind that this is just an expirement. I strongly recommend to use PMS on your computer when possible.

You do not need root access or a high end phone to follow this guide. The only thing you need is +-2.5GB of free storage and a basic understanding of linux.

Installation

Preparation

First of all, go to the playstore and install termux (?). Temux is a terminal emulator that allows you to run basic linux commands on your android device. We will use this to install a Ubuntu chroot/proot container that will run PMS.

Secondly, go get the Hacker's Keyboard. It makes typing and navigation on termux way easier.

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Title

Subtitle, small description or quote

Features