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Full Discussion: FileChecksum Monitoring
Operating Systems Linux FileChecksum Monitoring Post 303006534 by rbatte1 on Friday 3rd of November 2017 07:19:33 AM
Old 11-03-2017
Why not do an md5sum of all the files you are interested in to a single file? That way, just running md5sum -c checksums-file will do them all in one go. If you look at the file it creates, it will have the checksum and the examined filename in each record so you don't need to keep lots of separate single files and save you the worry of building/using an array.

For clarity, you can spread out your script if that helps, so saving the initial checksums:-
Code:
# However many files per line that makes sense to you, but nothing after the \ on each line

files_to_check="\
 /etc/passwd  /etc/shadow /security/access.conf \
 /etc/resolv.conf  /etc/sysconfig/network-scripts/* \
 /etc/fstab \
 /etc/httpd/httpd.conf \
 /anything/else/you/fancy \
"


md5sum $files_to_check > /var/lib/md5sums/critical.md5

Later you can just md5sum -c /var/lib/md5sums/critical.md5 and you get a nice report about the files previously listed.



I hope that this helps,
Robin
 

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LEARN ABOUT DEBIAN

lcf

LCF(1)							      Debian GNU/Linux manual							    LCF(1)

NAME

       lcf - Determine which of the historical versions of a config is installed

SYNOPSIS

       lcf [options] <Destination File Name> <Historical MD5SUM source directory>

DESCRIPTION

       This script, given a destination file name, and a directory containing md5sums of historical versions of the file, attempts to determine if
       the installed version corresponds to a historical version. lcf uses the same algorithm that ucf uses, and should exhibit  the  same  behav-
       iour.

       The  source  directory  is  the place where historical md5sums are expected to live. Specifically, the historical md5sums are looked for in
       either the file ${filename}.md5sum, or the subdirectory ${filename}.md5sum.d/

OPTIONS

       -h, --help
	      Print a short usage message

       -n, --no-action
	      Dry run. Print the actions that would be taken if the script is invoked, but take no action.

       -d [n], --debug [n]
	      Set the debug level to the (optional) level n (n defaults to 1). This turns on copious debugging information.

       -v,  --verbose
	      Make the script be very verbose about setting internal variables.

FILES

       /var/lib/ucf/hashfile, /etc/ucf.conf

SEE ALSO

       ucf(1) ucf.conf(5).

BUGS

       There are no bugs.  Any resemblance thereof is delirium. Really.

AUTHOR

       This manual page was written Manoj Srivastava <srivasta@debian.org>, for the Debian GNU/Linux system.

Debian								    Feb 1 2002								    LCF(1)
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