On Fri, 2014-07-11 at 09:25 +0200, Runiq wrote: > On 10.07.2014 18:59:17, Daniel Micay wrote: > >On 10/07/14 06:56 PM, Klearchos-Angelos Gkountras wrote: > >>In my new laptop, I install archlinux and works fine but also when I > >>try to use gparted not promont one dialog to have root priviliges... > >>how to fix that? > > > >I'm a bit unsure about what you're asking for. To avoid the error, you > >should run it with root privileges with a command like `pkexec > >gparted`. > > What's the advantage of pkexec over sudo in this case? I guess you mean what's the advantage of a graphical frontend for sudo, e.g. gksudo over pkexec. The advantage of pkexec over sudo is that you are prompted for the password by a GUI, so you can launch it e.g. from the applications menu of a desktop environment, without the need to start it in a terminal emulation. If you want to run a GUI app, e.g. Firefox as user B, while you're in a user A's X session, you need to do something like this: xhost + ; gksudo -u B firefox xhost + is a sledgehammer, I anyway use it that way, xhost could be used smarter. However, if you instead run xhost + ; pkexec --user B firefox you get "Error: no display specified", not to mention that you need to launch /usr/lib/lxpolkit/lxpolkit or similar before you can use pkexec, IOW IMO it's a disadvantage to preffer pkexec over gksudo, but it's always mentioned that it should be better to use pkexec instead of gksudo, some argue that xhost + isn't needed with pkexec, but without xhost + I also get "Error: no display specified". Perhaps after writing complicated polkit rules it would work.
