Confirmed incorrect behavior in bionic. xenial and cosmic behave correctly.
** Changed in: sudo (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to sudo in Ubuntu. https://bugs.launchpad.net/bugs/1799857 Title: sudo -p '' displays a password prompt which it shouldn't Status in sudo package in Ubuntu: Confirmed Bug description: I have small script that invokes another shell script as root thus: #!/bin/bash echo "mypass" | sudo -p '' -S /usr/StorMan/StorMan.sh when running in 16.04 LTS this didn't display a password prompt which I understand to be correct behaviour. Since upgrading to 18.04.1 LTS the output looks like: amonra@Charon:~$ ./storman [sudo] password for amonra: which as far as I can determine is not correct. Thanks Dave ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: sudo 1.8.21p2-3ubuntu1 ProcVersionSignature: Ubuntu 4.15.0-38.41-generic 4.15.18 Uname: Linux 4.15.0-38-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.4 Architecture: amd64 CurrentDesktop: LXDE Date: Thu Oct 25 03:07:27 2018 InstallationDate: Installed on 2016-03-28 (940 days ago) InstallationMedia: Ubuntu-Server 14.04.4 LTS "Trusty Tahr" - Release amd64 (20160217.1) SourcePackage: sudo UpgradeStatus: Upgraded to bionic on 2018-10-22 (2 days ago) VisudoCheck: /etc/sudoers: parsed OK /etc/sudoers.d/README: parsed OK modified.conffile..etc.sudoers: [inaccessible: [Errno 13] Permission denied: '/etc/sudoers'] modified.conffile..etc.sudoers.d.README: [inaccessible: [Errno 13] Permission denied: '/etc/sudoers.d/README'] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sudo/+bug/1799857/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp