03-04-2020
Thank you I'll give it a try
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LEARN ABOUT CENTOS
grub-fstest
GRUB-FSTEST(1) User Commands 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.
-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.
grub-fstest (GRUB) 2.02-2ubuntu8.3 July 2018 GRUB-FSTEST(1)