ref: 7c22230886134121893f02ee283da85f3a6807e6
dir: /dis/svc/registry/
#!/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?