arian

var spawn = require('child_process').spawn;
var Stream = require('stream');

/**
 * crops and resizes images to our desired size
 * @param {Stream} streamIn in stream containing the raw image
 * @return {Stream}
 */
exports.cropImage = function(streamIn){

naholyr

Sample service script for debianoids

Look at LSB init scripts for more information.

Usage

Copy to /etc/init.d:

# replace "$YOUR_SERVICE_NAME" with your service's name (whenever it's not enough obvious)

siygle

var sync = require('child_process').spawnSync;

console.log('start ls');
var ls = sync('ls', ['-lh', '/usr']);
console.log('end ls');

console.log('start grep');
var grep = sync('grep', ['local'], {
    input: ls.stdout
})

joyrexus

A quick overview of the node.js streams interface with basic examples.

This is based on @brycebaril's presentation, Node.js Streams2 Demystified

Overview

Streams are a first-class construct in Node.js for handling data.

Think of them as as lazy evaluation applied to data.

losisli

测试平台：DigitalOcean VPS ubuntu14.04 x64, strongswan5.2.2

运行以下命令请使用root权限

一：安装strongswan

由于ubuntu软件仓库中strongswan版本较低，因此从官网源码编译安装

apt-get install build-essential     #编译环境
aptitude install libgmp10 libgmp3-dev libssl-dev pkg-config libpcsclite-dev libpam0g-dev     #编译所需要的软件

application2000

These commands are based on a askubuntu answer http://askubuntu.com/a/581497
To install gcc-6 (gcc-6.1.1), I had to do more stuff as shown below.
USE THOSE COMMANDS AT YOUR OWN RISK. I SHALL NOT BE RESPONSIBLE FOR ANYTHING.
ABSOLUTELY NO WARRANTY.

If you are still reading let's carry on with the code.

sudo apt-get update && \
sudo apt-get install build-essential software-properties-common -y && \
sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y && \

snakevil

使用树莓派3B打造超强路由之二：初成

通过第一篇《使用树莓派3B打造超强路由之一：初装》的努力，树莓派3B已经可以作为一台超低能耗、随身携带的开发用服务器来使用了。但这对于目标——打造超强路由而言，才刚刚开始。接下来，我们需要将其打磨成一台基本的无线路由器。

WARNING 本文所有指令均仅供参考，切勿无脑复制粘贴！

ipbastola

Safest way to clean up boot partition - Ubuntu 14.04LTS-x64, Ubuntu 16.04LTS-x64

Reference

Case I: if /boot is not 100% full and apt is working

1. Check the current kernel version

$ uname -r 

joepie91

Not all random values are created equal - for security-related code, you need a specific kind of random value.

A summary of this article, if you don't want to read the entire thing:

• Don't use Math.random(). There are extremely few cases where Math.random() is the right answer. Don't use it, unless you've read this entire article, and determined that it's necessary for your case.
• Don't use crypto.getRandomBytes directly. While it's a CSPRNG, it's easy to bias the result when 'transforming' it, such that the output becomes more predictable.
• If you want to generate random tokens or API keys: Use uuid, specifically the uuid.v4() method. Avoid node-uuid - it's not the same package, and doesn't produce reliably secure random values.
• If you want to generate random numbers in a range: Use random-number-csprng.

You should seriously consider reading the entire article, though - it's

dhei

Example of LINQ Select and ToDictionary with parallel execution of tasks

var dataSource = new List<object>() { "aaa" , "bbb" };
var tasks = dataSource.Select(async data => new { Key = data.ToString(), Value = await AsyncDoSomething(data.ToString()) });
var results = await Task.WhenAll(tasks);
Dictionary<string, int> dictionary = results.ToDictionary(pair => pair.Key, pair => pair.Value);

Adapted from this Stackoverflow answer.