Language Selection

English French German Italian Portuguese Spanish

Why starting a KDE application with just su failed?

Filed under
KDE
MDV

Several times users where surprised by the new behavior of KDE 4 applications. Indeed, as the super-user mode for the applications doesn't not work currently, they often have to open a terminal, and use su to start the application as another, notably root. However when just using su instead of su -, this will failed. Why ? The explication is very simple.

First it should be noted that su means Substitute User, and not Super User. Indeed su allow to switch to whatever user you want and not just to the root user. However if no user is specified, then it will used the root user. This is logic because in a Unix/linux system, there's only one user which will normally always exist and with the same name : root. Now that this point is clarified, it should be noted that you have 2 ways to switch to another user : the light way and the heavy way. Now let's try to explain the differences between each ways :

rest here




More in Tux Machines

Zentyal announces Zentyal Server 4.1

Zentyal Development Team is proud to announce Zentyal Server 4.1, a new release of the Zentyal Server with native Microsoft® Exchange protocol implementation and Active Directory interoperability. Read more

OpenStack Kilo Now at Feature Freeze

We're now in the stretch run for the OpenStack Kilo platform release. Read more Also: Red Hat's Bet on OpenStack, OpenShift Shows Progress

New Kernel Releases

Open-Source Driver Fans Will Love NVIDIA's New OpenGL Demo

Those with a bit of humor will love the demo NVIDIA recently used for showing off their Nouveau-based open-source graphics driver stack on the Tegra K1 SoC. Last month at FOSDEM was a presentation on the Nouveau Tegra K1 driver stack by Alexandre Courbot of NVIDIA. In there NVIDIA talked about their great experience working on this open-source driver and engagement with the Nouveau community, which will continue for future Tegra SoCs. That aforelinked article covered all of the important details of that presentation. Read more