<loop backend anon xfer>
$env $src/twoftpd-$backend 2>/dev/null
$env BANNER='foo
bar' $src/twoftpd-$backend 2>/dev/null
<result anon>
220 Ready to transfer files.^M
220-foo^M
220-bar^M
220 Ready to transfer files.^M
<result xfer>
230 Ready to transfer files.^M
230-foo^M
230-bar^M
230 Ready to transfer files.^M
