When umount says target is busy, but no process can be blamed

A short one: What to do if unmount is impossible with a # umount /path/to/mount umount: /path/to/mount: target is busy but grepping the output of lsof for the said path yields nothing. In other words, the mount is busy, but no process can be blamed for accessing it (even as a home directory). If this [...]

LG OLED with a Linux computer: Getting that pitch black

Introduction So I got myself an LG OLED65B9. It’s huge and a really nice piece of electronics. I opted out the bells and whistles, and connected it via HDMI to my already existing media computer, running Linux Mint 18.1. All I wanted was a plain (yet very high quality) display. However at some point I [...]

Linux Wine jots

General These are just a few jots on Wine. I guess this post will evolve over time. I’m running Wine version 4.0 on Linux Mint 19, running on an x86_64. First run Every time Wine is run on a blank (or absent) directory given by WINEPREFIX, it installs a Windows environment. Which Windows version an [...]

Firejail: Putting a program in its own little container

Introduction Firejail is a lightweight security utility which ties the hands of running processes, somewhat like Apparmor and SELinux. However it takes the mission towards Linux kernel’s cgroups and namespaces. It’s in fact a bit of a container-style virtualization utility, which creates sandboxes for running specific programs: Instead of a container for an entire operating [...]