adduser -D creates a locked account instead of a passwordless account
Ashen Gunaratne
mail at ashenm.ml
Fri Nov 8 04:52:21 UTC 2019
The use of flag '-D' while user account creation seems to disable the
created account (analogue of 'passwd -l') instead of simply leaving the
account passwordless (analogue of 'passwd -u'). Which I find contrasting
against the documentation;
> -D Do not assign a password
/ # busybox --help
BusyBox v1.28.3 (2018-04-03 20:29:50 UTC) multi-call binary
/ # addgroup -g 1000 alpine \
&& adduser -u 1000 -s /bin/sh -G alpine -D alpine
/ # cat /etc/shadow | grep alpine
alpine:!:17651:0:99999:7:::
/ # addgroup -g 1010 ubuntu \
&& adduser -u 1010 -s /bin/sh -G ubuntu ubuntu
/ # cat /etc/shadow | grep ubuntu
ubuntu:B8E3g/WNknCBw:17651:0:99999:7:::
The aforesaid issue has been already submitted to the BusyBox Bug and
Patch Tracking System bearing reference 10981.
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