GRUB-FSTEST(1)

NAME
grub-fstest - debug tool for GRUB filesystem drivers

SYNOPSIS
grub-fstest [OPTION...] IMAGE_PATH COMMANDS

DESCRIPTION
Debug tool for filesystem driver.

    Commands:

blocklist FILE
    Display blocklist of FILE.

cat FILE
    Copy FILE to standard output.

cmp FILE LOCAL
    Compare FILE with local file LOCAL.

cp FILE LOCAL
    Copy FILE to local file LOCAL.

crc FILE
    Get crc32 checksum of FILE.

hex FILE
    Show contents of FILE in hex.

ls PATH
    List files in PATH.

xnu_uuid DEVICE
    Compute XNU UUID of the device.

zfs-bootfs ZFS_DATASET
    Compute ZFS dataset bootpath.

-c, --diskcount=NUM
    Specify the number of input files.

-C, --crypto
    Mount crypto devices.

-d, --debug=STRING
    Set debug environment variable.

-K, --zfs-key=FILE|prompt
    Load zfs crypto key.

-n, --length=NUM
    Handle N bytes in output file.

-r, --root=DEVICE_NAME
    Set root device.

-s, --skip=NUM
    Skip N bytes from output file.

-u, --uncompress
    Uncompress data.

-v, --verbose
    print verbose messages.

-?, --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.

SEE ALSO
grub-probe(8)

The full documentation for grub-fstest is maintained as a Texinfo manual. If the info and grub-fstest programs are properly installed at your site, the command

    info grub-fstest

should give you access to the complete manual.