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I've got CentOS 6 installed on my server. A few users want to have access to it via VNC, so I installed GNOME separately. Everything works okay, but I want to have possibility to run applications as the root user without providing the root password (just like sudo in the terminal). Where can I set this up in GNOME?

I know that if I would install GNOME during the CentOS installation, I could just visudo and add certain users and that would be it. But when I installed GNOME separately it can't be done like this.

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You can use visudo! – enedil May 21 '14 at 6:07

There's a program called gksudo which asks user for this user's own password, not root password. Don't forget to add this user to sudoers or wheel group.

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unfortunately there is no gksudo or similar available in CentOS 6 – Krystian Oct 29 '13 at 12:02

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