Working with Access Control Lists
On the List
© IKO, Fotolia
The ancient Linux permission system is often insufficient for complex production environments. Access Control Lists offer a flexible alternative.
Alice appreciates the convenience of a PC-based electronic calendar, but to maintain her privacy, she has set strict permissions for her calendar file: She can add new appointments herself, but other members of her workgroup have read-only access. Others outside of her workgroup are not even allowed to look.
This configuration is fine at first, but one day Bob from another department agrees to collaborate with Alice. To allow this to happen, she has to give him access to her calendar data.
In this scenario, it is clear that the legacy Linux permission system has outlived its usefulness. To allow Bob to read the file with her calendar data, Alice can ask the administrator to move the new colleague into her own group, but this would allow Bob to view all the other documents produced by Alice's team. Another approach would be to temporarily set up a completely new user group with both Alice's and Bob's accounts as members. In this simple scenario, a temporary group might be an acceptable solution, but in a real-world enterprise environment, group management becomes far more complicated, and the habit of creating temporary groups on the fly can lead to too many groups with no good way of tracking them.
[...]
Buy this article as PDF
(incl. VAT)
Buy Linux Magazine
Subscribe to our Linux Newsletters
Find Linux and Open Source Jobs
Subscribe to our ADMIN Newsletters
Support Our Work
Linux Magazine content is made possible with support from readers like you. Please consider contributing when you’ve found an article to be beneficial.
News
-
Hannah Montana Linux Is Back!
Developer Noah Cagle decided the world needed the once obscure but beloved Linux distribution and gave it a decidedly pink refresh.
-
System76 Refreshes the Lemur Laptop
If you're looking for a laptop with tons of power and battery, look no further than the latest iteration of the System76 Lemur Pro.
-
More than 43 Million Lines of Code in Linux Kernel 7.2
Using the cloc utility, Michael Larabel of Phoronix discovered that Linux kernel 7.2 has over 43 million lines of code.
-
Kubuntu Focus Goes Ultra
The Kubuntu Focus team has upped the performance ante of its M2 and Zr laptops with the latest, greatest CPUs from Intel.
-
Linux Gamers May Soon See Less Mouse Lag in KDE Plasma
Gamers using KDE’s Plasma desktop have been suffering from a slight input delay in mouse movement that could lead to getting fragged.
-
Three Lines of Code Improve Linux Storage Performance
A developer changed three lines of code, giving Linux storage performance a 5% bump.
-
AUR Hit Again with Malicious Packages
Once again the Arch User Repository is plagued by a high volume of malicious packages.
-
Alpine Linux 3.24 Features Fresh Desktops and a Newer Kernel
If you're a fan of Alpine Linux, it's time to upgrade because the latest version has been released with KDE Plasma 6.6, Gnome 50, and Linux kernel 6.18 LTS.
-
EU Open Source Strategy Plays Key Role in Tech Sovereignty Package
Comprehensive measures adopted by the European Commission aim to reduce dependency on non-EU countries.
-
Linux Foundation Report Indicates AI Driving Tech Hiring
Within growing security and skills gaps, AI has been found to be a positive driving force behind tech hiring trends in Europe.