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freebsd zfs and pw user
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# adding a user

zfs create zroot/usr/home/USERNAME
pw groupadd -g USERID -n USERNAME

# add -G wheel to allow the user to su to root if needed
pw useradd -n USERNAME -c "REALNAME" -g USERNAME -s /bin/sh -u USERID -m

mkdir /home/USERNAME/.ssh
chmod 0700 /home/USERNAME
chmod 0700 /home/USERNAME/.ssh
chown -R USERNAME:USERNAME /home/USERNAME

# to allow ssh access, append the user public key to /home/USERNAME/.ssh/authorized_keys
# to deny console login, never set a local user password (ie passwd USERNAME)
# if a local user password is not set then it will require root to set one




# deleting a user

pw userdel -n USERNAME
pw groupdel -n USERNAME
zfs destroy -r zroot/usr/home/USERNAME

find / -uid USERID -ls
find / -gid USERID -ls