sshpass -e ssh root@"${server}" \
'useradd -m plom && '\
'mkdir /home/plom/.ssh && '\
+ 'chown plom:plom /home/plom/.ssh && '\
'chown plom:plom /tmp/authorized_keys && '\
'chmod u=rw,go= /tmp/authorized_keys && '\
'mv /tmp/authorized_keys /home/plom/.ssh/'