<requires good-cvm>
(
  echo '#!/bin/sh'
  echo 'echo UID=$UID GID=$GID HOME=$HOME USER=$USER'
) >$tmp/env
chmod 755 $tmp/env
auth $cvm $tmp/env 'USER username' 'PASS password'
rm -f $tmp/env
<result>
220-TwoFTPd server ready.^M
220 Authenticate first.^M
twoftpd-auth[PID]: USER username
331 Send PASS.^M
twoftpd-auth[PID]: PASS XXXXXXXX
UID=102 GID=103 HOME=/home/dir USER=username
