有趣的 0 byte 字元

自 ascii 編碼開始，就有很多 unreadable 字元，例如：\n、\r、 \t  \b…用來表示不同的作用；不過，unicode 編碼有一個字元編碼範圍更有趣，它是 「不存在」的存在 -- zero byte (0 byte)，有網友分享了一個短網址的服務，看起來一模一樣的短網址，卻會連線至不同的網頁，還蠻有趣的應用，不過，對大部分的人來說，短網址是為了減少網址太長造成輸入錯誤時減少字元的記憶，如果完全看不到也無法輸入的短網址，似乎更適合一些特殊場合或用途。
因為覺得有趣，就順便記錄下來，免得只剩下「一個轉身」的記憶把它遺忘了。

https://zws.im/​​​‌​‌​​​​​‌‌​/ 

https://zws.im/​​​‌​‌​​​​​‌​‌/

參考文章及網址：

• https://stackoverflow.com/questions/6907297/can-utf-8-contain-zero-byte#
• https://www.ifreesite.com/unicode-ascii-ansi.htm 

網友文章出處：

• https://yowlab.shps.kh.edu.tw/wordpress/?p=2011&fbclid=IwAR32L2wPLymnAyZ6_vfB24HI7dOYBAN0tCGtEzZ6tmVzoOUk5EIrwKRgomM
• https://www.facebook.com/groups/1399641346792035/permalink/2511439632278862/

清除MySQL 的 bin log

參考：迷失露的迷失 - MySQL 的 bin log 太多如何清除？
-------------------------------------------------------------------

千萬不要這麼做
# rm -rf mysql-bin.000001  (X, 錯誤做法)

你應該由 mysql 去控制／刪除這些檔
刪除單一檔的指令是 ： PURGE BINARY LOGS TO 'mysql-bin.000001’;

刪除 7 天前的檔案指令是：PURGE BINARY LOGS BEFORE DATE(NOW() - INTERVAL 7 DAY) + INTERVAL 0 SECOND;

自動刪除7天前的 log，那麼請在你的 my.cnf 加入 expire-logs-days=7

沒有replication，建議可以取消 log-bin
#log-bin=mysql-bin 

轉：DOCKER – HOW TO CONNECT TO A MYSQL RUNNING CONTAINER

轉貼自 LITTLETECHBLOGGER
---------------------------------

1. What we want to achieve:

We used the official mysql image from Docker Hub (https://hub.docker.com/_/mysql/), and created a running database container.

Now we need to connect to the MySQL database using MySQL command line client, to do some database operation.

2. Solution1:

Bash into the running container and run MySQL client.

2.1 Bash into the running MySQL container:

$ docker exec -t -i <container_name> /bin/bash

2.2 Run MySQL client:

$ mysql -u “<useranme>” -p

3. Solution2:

Use MySQl Command Line Client.

Reference: MySQL Image Official Doc

In the official guide, it states:

The following command starts another mysql container instance and runs the mysql command line client against your original mysql container, allowing you to execute SQL statements against your database instance:

$ docker run -it --link some-mysql:mysql --rm mysql sh -c 'exec mysql -h"$MYSQL_PORT_3306_TCP_ADDR" -P"$MYSQL_PORT_3306_TCP_PORT" -uroot -p"$MYSQL_ENV_MYSQL_ROOT_PASSWORD"'

The variables here are really confusing.  Here is a more readable version of this command:

$ docker run -it --link <container_name>:<image_name> --rm <image_name> sh -c 'exec mysql -h"<container_ip_address>" -P"<mysql_port_number>" -u"<mysql_username>" -p"<mysql_password>"'

Now, lets use an example to explain how to find all the variables.

3.1 Get container_name, image_name, mysql_port_number:

$ docker ps

We can get:

container_name: romuiweb_db_1

image_name: mysql

container_port_number: 3306

3.2 Get container_ip_address:

$ docker inspect –format ‘{{ .NetworkSettings.IPAddress }}’ <container_id>

3.3 Get mysql_username, mysql_password:

When we start the mysql image, we set environment variables to decide the username and password.

username is default to root.

password is set by MYSQL_ROOT_PASSWORD, and we can find it in docker-compose.yml file:

So we can get:

mysql_username: root,

mysql_password: password.

3.4 Create the real command:

Now we have all the values of the variables. We can construct the real command:

$ docker run -it –link romuiweb_db_1:mysql –rm mysql sh -c ‘exec mysql -h”172.17.0.2″ -P”3306″ -u”root” -p”password”‘

3.5 Run the command, gain access to MySQL:

If it works, skip the following problem solving part.

3.6 Problem Solving:

(In this problem, we are not using romuiweb_db_1 we used earlier. We switch to docker_db_1. The Ip Address is different now)

docker: Error reponse from daemon: Cannot link to <container_name>, as it does not belong to the default work.

$ docker run -it –link docker_db_1:mysql –rm mysql sh -c ‘exec mysql -h”172.20.0.3″ -P”3306″ -u”root” -p”password”‘

This means that we are not running the mysql connect container on the same network the mysql container is currently running on. We need to connect it to the same network use –net option. Reference: https://docs.docker.com/engine/userguide/containers/networkingcontainers/

Step1: Find out which network mysql container is running on:

$ docker inspect docker_db_1

Find the “Networks”:

As we can see from the screenshot above, the network docker_db_1 is running on is “docker_default”. We need to connect to this network. So we change out command to this:

$ docker run -it –net=docker_default –link docker_db_1:mysql –rm mysql sh -c ‘exec mysql -h”172.20.0.3″ -P”3306″ -u”root” -p”password”‘

After adding the network argument, we successfully connected:

OOXML 資源參考網站

OOXML 資源參考網站

• Eric White's Blog - Open XML, SharePoint, and Office
• 影片：Introduction to WordprocessingML
• WordprocessingML 文件的組織結構 (C#)
• PHPWord 的使用方法整理(一)最基本的使用方式
• PHPWord 的使用方法整理(二)使用樣版檔(Template)
• Three ways to create Word documents with PHPWord

[Git] 在命令提示字元視窗下，中文亂碼的解決方式

解決當前使用的視窗中文亂碼的設定方式：

git config --global core.quotepath false
git config --global gui.encoding utf-8
git config --global i18n.commit.encoding utf-8
git config --global i18n.logoutputencoding utf-8
set LESSCHARSET=utf-8

永久正常顯示中文的方式，只要把最後一列的環境變數加到Windows 的系統環境變數即可。

[網路教學]Vue教學文章或影片

• Vue官方教學 https://vuejs.org/v2/guide/
• Vue.js 手牽手，一起嗑光全家桶(Alex教學影片) https://ithelp.ithome.com.tw/articles/10203978
• 
  

[轉][程式] Postman - 測試Web Service的工具

原文： Postman - 測試Web Service的工具

 Postman 是用來測試 Web Service 方便的工具，在法蘭克還不認識它之前，要測試自己撰寫的 Web Service 都要用 HTML 刻一個表單，然後放上許多 input 的元件並且一個一個填入參數去 Call API，過程可說是相當麻煩，但是自從知道 Postman 後，就再也沒有自己刻過表單了。Postman 是 Chrome 的應用程式並可在 Chrome Web 商店找到它。今天就來介紹利用 Postman(Client端) 呼叫 TOS - ESB (Server端) 的一些基本功能並找兩個範例來實作，當然 Server 並非一定要跟法蘭克一樣是使用 TOS - ESB，也可是政府開放平台或公司後台的 API。