- I downloaded the current iso file of Ubuntu MATE from the website.
- I did a completely fresh install of Ubuntu MATE 16.04 (specifically 16.04.5).
- the same is true for Ubuntu MATE 18.04 (specifically 18.04.1)
- and according to @mook765 also Ubuntu Studio 18.04 (Xfce) seems to be affected
- I created a default user while installing with its GUI called
test(full name Test). The system thus created a UPG calledtest. - after installation had finished, I restarted the system.
- Now on the completely fresh system I open System > Control Center > Users and Groups > Manage Groups.
- I look for the
testgroup and press Properties, and here it is... usertestis not member of grouptest!
it looks like /etc/group suggests the same: (2nd last line)
test@test ~ $ less /etc/group | grep test
adm:x:4:syslog,test
cdrom:x:24:test
sudo:x:27:test
dip:x:30:test
plugdev:x:46:test
lpadmin:x:113:test
test:x:1000:
sambashare:x:129:test
but according to how should `id` and `/etc/group` be read? the primary group of a user is only listed in /etc/passwd and not additional in /etc/group to avoid redundancy.
id <username> seems to suggest a little bit different:
test@test ~ $ id test
uid=1000(test) gid=1000(test) groups=1000(test),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),113(lpadmin),129(sambashare)
the best way to proof is groups <username>:
test@test ~ $ groups test
test : test adm cdrom sudo dip plugdev lpadmin sambashare
So is this a bug by the GUIs? - Somehow i doubt it, because of how long time it is there and also present in two well known DEs...