SD cards are getting cheaper and cheaper. They are also growing larger and larger. Unfortunately, it also causes some sellers to sell fake SD cards – they are introduced as…
Tag: Linux
![[UFW BLOCK] messages in syslog – how to get rid of them?](https://handyman.dulare.com/wp-content/uploads/2020/09/1834166-754x566.jpg)
The UFW – Uncomplicated Firewall gets more and more popular. It is good because the better the servers are secured, the better is the security in general. However, UFW users…
Since some of our servers are running Linux, it is common that we are writing bash scripts (or shell scripts in general) to perform various actions. In this article, I…
This will be a quick one. I tend to forget the method of batch photo resize using ImageMagick in Linux. In some cases I need to resize all files in…
Since a lot of our clients use small Amazon EC2 instances to host their websites, we have to deal with the Linux updates regularly. Also, the goal is to spend…
I know that the title is rather a clickbait. It should be. If you are not using virtual environments for Python, you should start. This is really easy and can…
I’m just about to host the small Machine Learning workshop. I don’t want attendants to install Anaconda and use Jupyter Notebooks on their computers. I simply want to run Jupyter…
From time to time I have a need to analyze Apache access logs real quick. In most cases, website owners are noticing some strange activity or unusual traffic peak and…
Recently I noticed that one of my OpenVPN servers stopped working. It was just after the update on the Ubuntu 16.04.4 LTS. What I found was that the service failed…
In theory, MySQL replication should work without problems even if the servers are restarted, databases created and removed, data flowing in and out… Sometimes, however, there are errors that are…