ref: d3da2e1b89f30f404c3d11053680098f1b7bf677
dir: /appl/svc/registry.sh/
#!/dis/sh.dis -n
load std
or {ftest -f /mnt/registry/new} {
db=()
and {ftest -f /lib/ndb/registry} {db=(-f /lib/ndb/registry)}
mount -A -c {ndb/registry $db} /mnt/registry
}
listen -v 'tcp!*!registry' {export /mnt/registry&} # -n?