Hi On Mon, Dec 08, 2014 at 06:16:37PM +0100, alex wrote: > > Hi everybody, > > I observe a strange inconsistency in user permissions (jessie up to > date; xfce4). Id est: > > user@rheya:~$ ls -la /dev/ttyACM0 > crw-rw---- 1 root dialout 166, 0 Dec 8 17:25 /dev/ttyACM0 > > user@rheya:~$ id alex > uid=1000(user) gid=1000(user) groups=1000(user),20(dialout)
This will show the group memberships of the "alex" user, if he was to log in now. > > user@rheya:~$ echo "\0" > /dev/ttyACM0 > bash: /dev/ttyACM0: Permission denied Well - you do not appear to be logged in as "alex". You are "user" ?? > > although > > root@rheya:~# echo "\0" > /dev/ttyACM0 && echo ok > ok running the "id" command without any parameters should show you the group memberships of your shell. > I *suspect* this is somehow related to systemd-logind (while systemd > is not running as pid 1) > > I just added user to group dialout (and astonished not to have to > logout in order to have updated user groups list) Well - if you run "id username", this will update immediately. But what matters is the group memberships of your *shell* - which it will get at login-time... Hope this helps -- Karl E. Jorgensen -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/20141208172633.GA24709@hawking
