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Full Discussion: Checking MD5 Hashes on a folder tree
Top Forums Shell Programming and Scripting Checking MD5 Hashes on a folder tree Post 303022963 by Pollardd on Monday 10th of September 2018 12:34:18 AM
Old 09-10-2018
Hello Again,
After more google research I found that the MD5 files created on my windows system had one extra character apart from the * in front of the file name, that is a Carriage Return.

I also don't think I need the functionality of md5deep as "find" will search sub directories anyway.

I upgraded md5sum on my NAS device as I has some old unknown version.
Now if I use the following command

Code:
find . -name "*.md5" -exec cat {} \; | dos2unix | md5sum -c

I have included a pipe through dos2unix that will convert the windows line termination to unix line termination.

I modified one of my MD5 files to cause a failure.

The Result
Code:
COMPANYSRV_F_VOL-b008-i068.spi: OK
COMPANYSRV_F_VOL-b008-i067.spi: FAILED
COMPANYSRV_F_VOL-b008-i066.spi: OK
md5sum: WARNING: 1 computed checksum did NOT match

This is exactly what I need. I should now be able to schedule this command and send myself the output in an email.

Hope this helps someone else.
David
Last edited by Scott; 09-10-2018 at 09:56 AM.. Reason: Please use code tags
This User Gave Thanks to Pollardd For This Post:
RudiC
 

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LEARN ABOUT DEBIAN

md5sum

MD5SUM(1)							   User Commands							 MD5SUM(1)

NAME

       md5sum - compute and check MD5 message digest

SYNOPSIS

       md5sum [OPTION]... [FILE]...

DESCRIPTION

       Print or check MD5 (128-bit) checksums.	With no FILE, or when FILE is -, read standard input.

       -b, --binary
	      read in binary mode

       -c, --check
	      read MD5 sums from the FILEs and check them

       -t, --text
	      read in text mode (default)

   The following three options are useful only when verifying checksums:
       --quiet
	      don't print OK for each successfully verified file

       --status
	      don't output anything, status code shows success

       -w, --warn
	      warn about improperly formatted checksum lines

       --strict
	      with --check, exit non-zero for any invalid input

       --help display this help and exit

       --version
	      output version information and exit

       The  sums  are computed as described in RFC 1321.  When checking, the input should be a former output of this program.  The default mode is
       to print a line with checksum, a character indicating type (`*' for binary, ` ' for text), and name for each FILE.

BUGS

       The MD5 algorithm should not be used any more for security related purposes.  Instead, better use an SHA-2 algorithm,  implemented  in  the
       programs sha224sum(1), sha256sum(1), sha384sum(1), sha512sum(1)

AUTHOR

       Written by Ulrich Drepper, Scott Miller, and David Madore.

REPORTING BUGS

       Report md5sum bugs to bug-coreutils@gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>
       Report md5sum translation bugs to <http://translationproject.org/team/>

COPYRIGHT

       Copyright (C) 2011 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       The  full documentation for md5sum is maintained as a Texinfo manual.  If the info and md5sum programs are properly installed at your site,
       the command

	      info coreutils 'md5sum invocation'

       should give you access to the complete manual.

GNU coreutils 8.12.197-032bb					  September 2011							 MD5SUM(1)
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