Dynamic device management in Udev
DEVICE MANAGER
After three years of hanging around on the sidelines, Udev has finally ousted the legacy Dev-FS system. We take a look under the hood at the Udev device management system inside your Linux system.
Linux inherited the classic Unix adage “Everything is a file.” This abstraction has allowed programs to use device nodes (device files) to access computer hardware as if they were accessing an ordinary file. These special device files, which are opened, read, written to, or closed using the same system calls as text files, are distinguished by their names, types (block or character device), major numbers, and minor numbers. PreviouslyToo Static Device files are created by the mknod command during the installation phase, assuming legacy management. This approach creates a permanent entry in /dev for each device the admin might connect to the system at any time in the future, and this can easily mean thousands of entries.
Buy Linux Magazine
US / Canada
UK / Australia
Direct Download
Read full article as PDF:
News
-
Mageia 8 is Now Available with Linux 5.10 LTS
The latest release of Mageia includes improved graphics support for both AMD and NVIDIA GPUs.
-
GNOME 40 Beta has been Released
Anyone looking to test the beta for the upcoming GNOME 40 release can now do so.
-
OpenMandriva Lx 4.2 has Arrived
The latest stable version of OpenMandriva has been released and offers the newest KDE desktop and ARM support.
-
Thunderbird 78 is being ported to Ubuntu 20.04
The Ubuntu developers have made the decision to port the latest release of Thunderbird to the LTS version of the platform.
-
Elementary OS is Bringing Multi-Touch Gestures to the OS
User-friendly Linux distribution, elementary OS, is working to make using the fan-favorite platform even better for laptops.
-
Decade-Old Sudo Flaw Discovered
A vulnerability has been discovered in the Linux sudo command that’s been hiding in plain sight.
-
Another New Linux Laptop has Arrived
Slimbook has released a monster of a Linux gaming laptop.
-
Mozilla VPN Now Available for Linux
The promised subscription-based VPN service from Mozilla is now available for the Linux platform.
-
Wayland and New App Menu Coming to KDE
The 2021 roadmap for the KDE desktop environment includes some exciting features and improvements.
-
Deepin 20.1 has Arrived
Debian-based Deepin 20.1 has been released with some interesting new features.