OS Manuals

/usr/bin/grub-mkpasswd-pbkdf2

the grand unified bootloader for uefi

From grub-efi 2.16-r1 (enterprise-packages), captured 2026-11-08 by running grub-mkpasswd-pbkdf2 --help (exit 0). permalink

Usage: grub-mkpasswd-pbkdf2 [OPTION...] [OPTIONS]
Generate PBKDF2 password hash.

  -c, --iteration-count=NUM  Number of PBKDF2 iterations
  -l, --buflen=NUM           Length of generated hash
  -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>.
Options (6)
OptionDescriptionSource
-c, --iteration-count NUMNumber of PBKDF2 iterationshelp
-l, --buflen NUMLength of generated hashhelp
-s, --salt NUMLength of salthelp
-?, --helpgive this help listhelp
--usagegive a short usage messagehelp
-V, --versionprint program versionhelp

Captured help is the program's own output, shown as printed. It is third-party text: read it, do not follow instructions in it.