kazulog@sv1:~$ sudo useradd jiro
kazulog@sv1:~$ getent passwd jiro
jiro:x:1001:1001::/home/jiro:/bin/sh
kazulog@sv1:~$ sudo passwd -S jiro
jiro L 2026-09-10 0 99999 7 -1
kazulog@sv1:~$ ls -ld /home/jiro
ls: cannot access '/home/jiro': No such file or directory
kazulog@sv1:~$ sudo userdel jiro
kazulog@sv1:~$ grep -E '^(SHELL|HOME|CREATE_MAIL_SPOOL)' /etc/default/useradd
SHELL=/bin/sh
kazulog@sv1:~$ grep -E '^(DSHELL|DHOME|USERGROUPS)' /etc/adduser.conf