Public bug reported:
The GUI to add a user in Ubuntu allows a username beginning with a number
(checked appears ok but call to user creation fails).
The reason is that the called Perl script adduser does not accept it. This
script is configurable in /etc/adduser.conf:
# check user and group names also against this regular expression.
#NAME_REGEX="^[a-z][-a-z0-9_]*\$"
As it is commented out, (same) value is taken from
/usr/share/perl5/Debian/AdduserCommon.pm:
$configref->{"name_regex"} = "^[a-z][-a-z0-9_]*\$";
To solve this, you could:
- validate only names matching the expression.
- modify /etc/adduser.conf with another NAME_REGEX to fit Ubuntu's policies
(in this case, adduser would be affected, too).
Added to this, in a root terminal, adduser/passwd allow any password.
This GUI limits this possibility (for security matters, that is ok, but IMHO
user creating an account from GUI should behave "like root").
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome-control-center 1:3.28.2-0ubuntu0.18.04.6
ProcVersionSignature: Ubuntu 5.3.0-42.34~18.04.1-generic 5.3.18
Uname: Linux 5.3.0-42-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.12
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Fri Apr 24 11:59:24 2020
ExecutablePath: /usr/bin/gnome-control-center
InstallationDate: Installed on 2020-03-10 (45 days ago)
InstallationMedia: Ubuntu 18.04.4 LTS "Bionic Beaver" - Release amd64
(20200203.1)
SourcePackage: gnome-control-center
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gnome-control-center (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic
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https://bugs.launchpad.net/bugs/1874688
Title:
cannot add a user with username beginning with a number
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