RE: group membership activation
Hi Seeker, >> Running a fresh Jessie install on a laptop with GNOME. >> Today I had to add a user (me) to a group (wireshark) for a program >> (wireshark gui) to work. At first I thought I did something wrong but >> after a reboot it did work, wireshark was able to see the interfaces. >> >>[...] >> I know that in a Windows environment the group membership is added to >> the user token at login. Changes in group membership have no effect >> untill the user logs in again. >> > If you know enough to know that about Windows, I don't know why you would > assume there was a problem or that you did something wrong in Linux. > > It's not a problem, it's by design. > > Mysteriously the first things that come up for me on google don't mention > it Which is what I ran into as well. I do not remember what I used as search keys(s) but my first 4-5 hits did not provide an answer, which is why I asked. Thanks for your pointers as well. Bonno Bloksma
Re: group membership activation
On Thu, 18 Feb 2016 16:10:48 + Bonno Bloksma wrote: > Hi, > > Running a fresh Jessie install on a laptop with GNOME. > Today I had to add a user (me) to a group (wireshark) for a program > (wireshark gui) to work. At first I thought I did something wrong but after a > reboot it did work, wireshark was able to see the interfaces. > > So probably group membership is not determined at runtime but maybe at login > or some other moment. Where can I find more info about this? > Is this a problem specific to a desktop environment of can I run into this > with a straight CLI setup as well? > > I know that in a Windows environment the group membership is added to the > user token at login. Changes in group membership have no effect untill the > user logs in again. IIUC, Linux works the same way, although there are workarounds: http://superuser.com/questions/272061/reload-a-linux-users-group-assignments-without-logging-out https://arkaitzj.wordpress.com/2010/03/08/linux-add-user-to-a-group-without-logout/ > Bonno Bloksma Celejar
Re: group membership activation
On 2/18/2016 8:10 AM, Bonno Bloksma wrote: Hi, Running a fresh Jessie install on a laptop with GNOME. Today I had to add a user (me) to a group (wireshark) for a program (wireshark gui) to work. At first I thought I did something wrong but after a reboot it did work, wireshark was able to see the interfaces. So probably group membership is not determined at runtime but maybe at login or some other moment. Where can I find more info about this? Is this a problem specific to a desktop environment of can I run into this with a straight CLI setup as well? I know that in a Windows environment the group membership is added to the user token at login. Changes in group membership have no effect untill the user logs in again. Bonno Bloksma If you know enough to know that about Windows, I don't know why you would assume there was a problem or that you did something wrong in Linux. It's not a problem, it's by design. Mysteriously the first things that come up for me on google don't mention it https://www.pluralsight.com/blog/tutorials/linux-add-user-command http://www.oreilly.com/openbook/debian/book/ch07_01.html Probably easily overlooked, but the relevant Archwiki page does mention that if the user is logged in at the time the change is made, they will need to log out and log in before they see the change. https://wiki.archlinux.org/index.php/users_and_groups Later, Seeker
group membership activation
Hi, Running a fresh Jessie install on a laptop with GNOME. Today I had to add a user (me) to a group (wireshark) for a program (wireshark gui) to work. At first I thought I did something wrong but after a reboot it did work, wireshark was able to see the interfaces. So probably group membership is not determined at runtime but maybe at login or some other moment. Where can I find more info about this? Is this a problem specific to a desktop environment of can I run into this with a straight CLI setup as well? I know that in a Windows environment the group membership is added to the user token at login. Changes in group membership have no effect untill the user logs in again. Bonno Bloksma