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php -v php –ini update-alternative  

Source: A Guide to MySQL and PHP UTF-8 Encoding | Toptal

Source: Apache Rewrite with Htaccess 理解與技巧 | by awonwon | 浦島太郎的水族缸 | Medium

Source: mod_rewrite – Apache HTTP Server

Source: How to Disable IPv6 on Ubuntu Linux

http://www.michaelhinds.com/tech/linux/ubuntu-server.html#mysql

Source: Linux 將 BIG5 文字檔轉成 UTF-8 格式 – Nothing but..

Using tar command is fast and effective. You have to exclude dynamic data tar –exclude=’./var’ –exclude=’./pub/media/catalog’ –exclude=’./pub/media/productattach’ –exclude=’./download’ –exclude=’./generated’ -cvzf my.tar.gz ./* When apply the above command you have to care about the order of options. –exclude must be place at the beginning.

Logrotate is a system utility that manages the automatic rotation and compression of log files. If log files were not rotated, compressed, and periodically pruned, they could eventually consume all available disk space on a system. Source: How To Manage Logfiles with Logrotate on Ubuntu 16.04 | DigitalOcean