In the late 1980s, when IBM PC had proliferated while I was still supporting IBM mainframe, I wrote a PC tool that sent commands to the mainframe and received responses back via the PC 3270 terminal emulator. This tool helped to…
This guide is using X2Go as an alternative to VNC (or noVNC) for accessing remote Ubuntu Desktop as described in the previous article. Similar to VNC, X2Go is an open-source remote desktop software that enables access to a Linux graphical…
When you are going to install Ubuntu on a local machine, there are always two versions to choose: desktop or server. Whereas if you want to deploy Ubuntu on the cloud, most cloud service providers only provide server version. This makes…
For an organization who plans to deploy public cloud application to their internal users, one in the top list that needs to be considered carefully is how to authenticate the users. Most of the organization have an existing intranet, behind…
One of the fundamental skill needed as electronics enthusiast is that of soldering. For this purpose, you need a common soldering iron that typically has a power rating of 20-30 watts or so, which is fine for most work. But…
I already own an internet domain name that I use for my website. Later on, I have a need to create several email accounts with the same domain address. The common solution would be to subscribe to an email hosting…
OK, it is not the first. But I couldn’t resist to have fun with it anyway. It is driven by personal nostalgia and fascinated by how computer has achieved such impressive price performance improvement over time that I experience myself….
Often you may need to run Raspberry Pi headless, that is without monitor and keyboard+mouse. To access this Raspberry Pi then you use SSH or similar remote access utility from your PC. The method requires that there is network connection…
Historically, the most popular USB to Serial Adapter is the one that is based on either FTDI FT232 chip or Profilic PL2303 chip. Due to its popularity, as usual the market is then flooded with cheaper counterfeit chips from China….
It is common that swap partition was created and reserved during installation of on-premise Linux server. Even if it was not, you can always add swap partition easily as long as you still have spare disk space. That is not…