sergekukharev

Latency Comparison Numbers (~2012)

Name
L1 cache reference	0.5	ns
Branch mispredict	5	ns
L2 cachereference	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

egoarka

echo "33:34" | awk -F':' '{ print $1, $2 }' | read a b <<<  (cat)
read c d <<< $(echo "21:22" | awk -F':' '{ print $1, $2 }')

fnky

ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

• Ctrl-Key: ^[
• Octal: \033
• Unicode: \u001b
• Hexadecimal: \x1B
• Decimal: 27

mykubicle

#!/bin/bash

# Uninstall old version
sudo apt-get remove docker docker-engine docker.io
# Update apt package index
sudo apt-get update
# Install packages to allow apt to use a repo over HTTPS
sudo apt-get install apt-transport-https ca-certificates curl software-properties-common
# Add Docker offical GPG Key
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

steven2358

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

Basic conversion

rizo

# Protobuf Builder
# ================
#
# This image builds protocol buffers library from source with Go generation
# support. The builder and runner images are produced.

# Builder Image
# -------------

FROM golang:1.8.3-alpine3.6 as builder

JBlond

Regular Colors

Value	Color
\e[0;30m	Black
\e[0;31m	Red
\e[0;32m	Green
\e[0;33m	Yellow
\e[0;34m	Blue
\e[0;35m	Purple

marcgeld

# Generate a random Alphanumeric string

Function Get-RandomAlphanumericString {
	
	[CmdletBinding()]
	Param (
        [int] $length = 8
	)

	Begin{

ckandoth

# Create a folder where you want to install different Pythons, and cd into it:
# Note that it doesn't need to be your home folder. Put it wherever you want to maintain such software:
export PYTHON_BASE="$HOME/python"
mkdir -p $PYTHON_BASE
cd $PYTHON_BASE

# Download source tarball into a subfolder named src, and untar:
curl --create-dirs -L -o src/Python-2.7.10.tgz https://www.python.org/ftp/python/2.7.10/Python-2.7.10.tgz
cd src
tar -zxf Python-2.7.10.tgz

akkida746

public class WsFilter implements Filter {

	private ApplicationContextProvider springContext;
	private FilterConfig filterConfig;
	private MessageFactory msgFactory = null;
	private static final Logger logger_ = Logger.getLogger(WsFilter.class.getName());
	private static final Logger soap_logger = Logger.getLogger("soapLogger");
	
	@Autowired
	private WsFilterHelper helper;