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

More From Red Hat Summit

Android Leftovers

Ubuntu 16.10 Alpha 1 to Come Only in Ubuntu MATE, Ubuntu Kylin & Lubuntu Flavors

In only two days from the moment of writing this article, we will be able to get a very early taste of the upcoming Ubuntu 16.10 (Yakkety Yak) operating system, as the first Alpha build should be released, as planned, on June 30, 2016. Read more

Lenovo and Red Hat advance partnership with telco push

Two Triangle tech titans are teaming up to create cloud solutions for the changing telco space: Lenovo and Red Hat. It’s not their first collaboration, says Brian Connors, vice president of next generation IT and business development in Lenovo’s Research Triangle Park-based Data Center Group. Red Hat even invested in Lenovo’s RTP executive briefing center, where its technology is currently “displayed prominently as customers come in." Read more