snakevil

【译】Docker 和子进程“僵尸化”问题

作者 Hongli Lai 看着像是华人，可惜没找到文章的中文版本，于是就很土鳖地手翻了一遍。文章的措辞很口语化，因此意译为主。点击这里可以阅读原文。

---

在构建 Docker 容器时，我们需要注意子进程的“僵尸化”问题（PID 1 Zombie Reaping Problem）。这会导致不可预知的和看起来匪夷所思的问题。本文解释了这个问题，也解释了如何去解决，并提供了一种预构建方案：Baseimage-docker 。

fntlnz

Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!

openssl genrsa -des3 -out rootCA.key 4096

LiamChapman

if (typeof absolutePosition == "undefined") {
  // Discovered here: http://stackoverflow.com/a/32623832/867154
  // Many thanks to @RoboCat!
	function absolutePosition (el) {
		
		var found, left = 0, top = 0, width = 0, height = 0, offsetBase = absolutePosition.offsetBase;
		
		if (!offsetBase && document.body) {
			offsetBase = absolutePosition.offsetBase = document.createElement('div');
			offsetBase.style.cssText = 'position:absolute;left:0;top:0';

billryan

替换上你的ID, Token, domain, sub_domain 就可以运行了。(ID,Token) 可以从 API 鉴权方式升级为 Token 获得。 脚本会在后台一直运行，初始化时会根据 sub_domain 查询是否已经创建，每隔30秒检查一遍IP，如果修改了就更新IP。

以 Archlinux 为例，按照如下步骤操作即可设置开机启动这个 DDNS 服务。

sudo wget -O /usr/local/bin/dnspod_ddns.py https://gist.github.com/billryan/239778f0821937939c8c140bdddd6840/raw/dnspod_ddns.py
sudo chmod +x /usr/local/bin/dnspod_ddns.py
sudo wget -O /etc/systemd/system/dnspod-ddns.py.service https://gist.github.com/billryan/239778f0821937939c8c140bdddd6840/raw/dnspod-ddns.service
sudo systemctl start dnspod-ddns

mattbell87

Installing Steam on Fedora

These instructions are currently for Fedora 30. I'll update them over the releases if anything changes.

Open Software

Press the Win/Super key, type software and press Enter.

Enable the Third party and Steam repositories

guiwoda

<?php
namespace App\ActiveRecord;

class PostRepository
{
    private $cache;
    
    public function __construct(Cache $cache)
    {
        // Any set() / get() cache implementation.

syed

package main

import (
	"bytes"
	"crypto/aes"
	"crypto/cipher"
	b64 "encoding/base64"
	"errors"
	"fmt"
	"log"

tanyuan

Arch Linux Pacman & Yaourt Package Manager

Pacman (Official)

Easter egg

Edit /etc/pacman.conf:

Under the # Misc options section, remove the # in front of Color and add the line ILoveCandy. Because Pac-Man loves candy.

subfuzion

Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

mholt

mholt [9:10 AM] 
When using http.Get(), is it really necessary to read the full response body just to close it later?

[9:10] 
The docs keep saying `Caller should close resp.Body when done reading from it.` and I keep seeing code like this:
```
io.Copy(ioutil.Discard, resp.Body)
resp.Body.Close()
```