07-02-2008
but i think he needs to verify if the files are ok... so i came up with "checksum". to copy a file and verify the copy is the same as the original are two different things. if "rsync" does this or this is not what the OP want's to do, forget about my idea...
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LEARN ABOUT DEBIAN
rdd-verify
VERIFIER(1) General Commands Manual VERIFIER(1)
NAME
rdd-verify - verifies checksums and hash values generated by rdd-copy(1)
SYNOPSIS
rdd-verify [OPTION] file1 ...
DESCRIPTION
Rdd-verify verifies checksums and hash values generated by rdd-copy(1). Rdd stores checksums (Adler32 or CRC32) in files. These files
must be passed to rdd-verify for verification.
Hash values (MD5 or SHA1) computed by rdd-copy(1) must be passed to rdd-verify on the command line as hexadecimal strings.
Rdd-verify reads all input files (file1, ...) and recomputes the checksums and hash values that the user wishes to verify. The verifica-
tion will very likely fail if the concatenation of the input files is different from the source that was copied by rdd-copy(1).
OUTPUT
All verification errors are reported on stderr.
OPTIONS
-?, --help
Print a usage message.
-V, --version
Report version number and exit.
-v, --verbose
Be verbose (more messages).
-v, --verbose
Be verbose (more messages).
--checksum, --adler32 file
Verify the Adler32 checksums stored in file.
--crc, --crc32 file
Verify the CRC32 checksums stored in file.
--md5, --md5 digest
Recompute the MD5 hash value. It should be equal to digest.
--sha, --sha1 digest
Recompute the SHA1 hash value. It should be equal to digest.
A digest argument is a hexadecimal string. Leading zeroes may not be omitted.
EXAMPLES
rdd-verify --md5 0123456789abcdef0123456789abcdef disk.img
Compute the MD5 hash value over disk.img and verify whether it equals 0123456789abcdef0123456789abcdef.
rdd-verify --adler32 checksums.a32 disk.img
Compute the adler32 checksums over disk.img and compare each checksum to the corresponding checksum in checksums.a32.
SEE ALSO
rdd-copy(1)
REPORTING BUGS
Report bugs to <rdd@holmes.nl>.
ACKNOWLEDGEMENTS
Many thanks to all who reported bugs and successes, and who suggested improvements. You know who you are.
COPYRIGHT
Copyright (C) 2002-2003 Netherlands Forensic Institute
This software comes with NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
rdd-verify February 2002 VERIFIER(1)