Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: shadow (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1342875
Title:
Unable to delete currently logged in user
Status in “shadow” package in Ubuntu:
Confirmed
Status in “shadow” source package in Trusty:
Confirmed
Status in “shadow” source package in Utopic:
Confirmed
Bug description:
A user can not delete themselves using the command 'sudo userdel -rf
<username>', this is common in cloud tools that clean up running
images prior to capture. A quick test shows that this worked from
Precise (didn't look back further) to Raring and stopped working with
Saucy.
Here's a quick example of the failure (from trusty):
# sudo adduser test
# sudo usermod -aG sudo test
## As the 'test' user
# sudo userdel -rf test
userdel: user test is currently used by process 9600
userdel: cannot open /etc/subuid
## User is not removed
Previously (output from precise)
# sudo userdel -rf test
userdel: user test is currently logged in
userdel: warning: can't remove /var/mail/test: No such file or directory
## User is removed
This is being run as the last command by tools that remove the
'ubuntu' user to clean the image prior to capture. This had
previously worked and it is preferable that this could be made to work
again. The alternative is removal by root, but the root user on cloud
images is locked down and we would not want the user to enable root to
run userdel on the risk of it not getting disabled properly prior to
image capture.
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