Devices with cgroup v2
I was curious to find out how containers have restricted access to devices. For cgroup v1 this is simple, but cgroup v2 uses eBPF. Find out what device access a container has with 3 easy and 1 difficult steps.
Category: Software
Fixing iCalendar feeds
Many sites allow you to synchronize to their calendar loosely following the iCalendar standard. Unforutunately many set the time for all day events, with a quick and dirty PHP script you can fix this.
Linux Memory Statistics
What does Used memory in Linux actually mean and how this concept has changed over the years.
WordPress 5.8.2 Debian packages
After a bit of a delay, WordPress version 5.8.2 packages should be available now. This is a minor update from 5.8.1 which […]
Changing Grafana Legends
A quick tour of label_replace to fix Legend texts in Grafana for Prometheus data sources.
Percent CPU for processes
The ps program gives a snapshot of the processes running on your Unix-like system. On most Linux installations, this will be the ps program from the procps project. What does the %CPU field mean in the output of ps?
Sending data in a signal
The well-known kill system call has been around for decades and is used to send a signal to another process. The most […]
procps-ng 3.3.16
procps-ng version 3.3.16 was released today. Besides some documentation and library updates, there were a few incremental changes. Zombie Hunting with pgrep […]
WordPress 5.2.4
Hot on the heels of WordPress version 5.2.3 which fixed a bunch of stuff we have WordPress 5.2.4 with fixes for six […]
WordPress 5.1.1
The Debian packages for WordPress version 5.1.1 are being updated as I write this. This is a security fix for WordPress that […]