> systemd-cryptsetup [OPTION…] COMMAND …

Attach or detach an encrypted block device.

Commands:
  attach VOLUME SOURCE-DEVICE [KEY-FILE] [CONFIG] Attach an encrypted block device
  detach VOLUME                                   Detach an encrypted block device

Options:
  -h --help                                       Show this help
     --version                                    Show package version

See the systemd-cryptsetup(8) man page for details.