usage: vls [--certfile CERTFILE] [--token TOKEN] [--version] [-d]
           [--vos-debug] [-v] [-w] [--help] [-l] [-g] [-h] [-S] [-r] [-t]
           node [node ...]

lists the contents of a VOSpace Node.

Long listing provides the file size, ownership and read/write status of Node.

positional arguments:
  node                 VOSpace Node to list.

optional arguments:
  --certfile CERTFILE  filename of your CADC X509 authentication certificate
  --token TOKEN        authentication token string (alternative to certfile)
  --version            show program's version number and exit
  -d, --debug          print on command debug messages.
  --vos-debug          Print on vos debug messages.
  -v, --verbose        print verbose messages
  -w, --warning        print warning messages only
  --help               show this help message and exit
  -l, --long           verbose listing sorted by name
  -g, --group          display group read/write information
  -h, --human          make sizes human readable
  -S, --Size           sort files by size
  -r, --reverse        reverse the sort order
  -t, --time           sort by time copied to VOSpace

Default service settings in ~/.config/vos/vos-config.
