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Let's Encrypt How To Secure Apache with Let's Encrypt on Ubuntu 16.04 SSL For Free 免費 SSL 憑證申...

SSL 常用技巧

Check TLS/SSL certificate expiration date from a website) DOM="www.cloudcoin.global" PORT="44...

系統帳號管理

教學連結 How to Lock User Accounts After Failed Login Attempts Restrict SSH User Access to Certai...

系統管理技巧

完整複製 Home 目錄 由於 User 的 Home 目錄內有許多隱藏檔,若要完整複製它們,有兩個方法: 方法一:可以複製成一個新目錄 cd /home cp -a user1/ us...

Dockerfile

Reference Writing An Optimized Dockerfile

基本指令操作

線上求助 man docker <command> man docker build man docker rmi 管理 Images ## 搜尋 Docker Hub ...

screen

screen 常用指令 啟用 screen #> screen or #> screen -S <session-name> 列出所有 session #...

Secure Docker Network

With iptables 對於 Container 不同啟動方式,在 iptables 的腳本設計會有些不同。 docker-compose: 透過橋接的網路介面(br-*) 與 DO...

基本指令

系統資訊 [~] # getsysinfo cputmp : get CPU temperature systmp : get system temperature sysfan [fa...

Vim 高級技巧

常用技巧 跳到上次編輯的行號:'. 刪除所有內容:dG 開啟指令視窗::terminal  :below terminal , :bel term :vertical term...

patch & diff

單一檔案 # 建立更新檔 diff -uN old.code new.code > patch.file # 套用更新檔 patch < patch.file # ...

cURL: Tips

Options in the integration with Shell CURL_CMD="curl" CURL_OPT="-qSfs -m 60" CURL_OPT_POST="-q...

Zabbix Agent

AIX Download: https://www.zabbix.com/download 必須新增一個帳號名 zabbix。 AIX 7.2 # Using smitty us...

Postfix: Tips

postfix 服務啟動/停止/重新載入 postfix check postfix start postfix stop postfix reload postfix flush ...

mailu

Mailu is a simple yet full-featured mail server as a set of Docker images. It is free software (b...

FirewallD

Introduction FirewallD is frontend controller for iptables used to implement persistent network ...

校時與時區設定

Chrony Built-in on CentOS CHAPTER 18. CONFIGURING NTP USING THE CHRONY SUITE CentOS / RHEL 7...

Function Samples

清理目錄裡的 *.gz 檔案 用法: KEEP=100 CleanUp /path/to/dir CleanUp() { dest="$1" if [ $dest ];t...

Postfix Installation

With Docker Github: docker-mailserver Docker: Running a Postfix container for testing mail du...

awk

教學網站 http://techarena51.com/index.php/advance-text-processing-examples-awk/ https://linuxhand...