Usage: grub-mkpasswd-argon2 [OPTION...] [OPTIONS]
Generate ARGON2 password hash.

  -i, --iterations=NUM       Number of iterations to perform
  -l, --buflen=NUM           Length of generated hash
  -m, --memory=NUM           Amount of memory (in kibibytes) to use
  -p, --parallelism=NUM      Degree of parallelism (i.e. number of threads)
  -s, --salt=NUM             Length of salt
  -?, --help                 give this help list
      --usage                give a short usage message
  -V, --version              print program version

Mandatory or optional arguments to long options are also mandatory or optional
for any corresponding short options.

Report bugs to <bug-grub@gnu.org>.