Intro sed is stream editor, a command line used to perform basic text transformation, usually on a file. Running sed sed options “Important” options for sed will be listed below: -n / --quiet / --silent Suppress automatic printing of pattern space --debug Annotate program execution. This will output the sed program in slightly user readable... » read more
Preparation For preparation of RPi, we can use this article. How I configure my docker swarm: rpi-01 as “manager” rpi-02 as “manager” rpi-03 as “manager”, swarm will require more than 50% online All connected via Wi-Fi and zerotier installed UFW installed and configured for basic use (docker will change configuration directly to built-in iptables) Installation... » read more
What is AVEVA Edge? Previously known as InduSoft Web Studio, this software is a economic software solution to interface with a lot of network/protocol. This product is also previously known as InTouch Edge. Beside its role as Human-Machine Interface (HMI), Edge also can work as IoT gateway for remote monitoring. In this article, we are... » read more
Preparing USB Note: We can boot RPi from USB if we are using RPi 3B+ or newer. Run Raspberry Pi Imager Choose OS-Lite and select USB flash drive from storage Press Ctrl+Shift+X for more advanced settings. Here we can configure the following items: First boot Plug in USB drive and power into RPi. The RPi... » read more
Objective Once you have purchased yourself a domain (e.g. domain.com) or multiple domain (e.g. domain1.com, domain2.com), you may be required to expose web services to the internet. Instead of using ports (e.g. domain1.com:10023, domain1.com:10024, domain2.com:20023, domain2.com:20024) and doing port forwarding for every single services you may host, it will be more elegant to use subdomain... » read more