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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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SCRIPT(1)						    BSD General Commands Manual 						 SCRIPT(1)

NAME
script -- make typescript of terminal session SYNOPSIS
script [-a] [-c COMMAND] [-f] [-q] [-t] [file] DESCRIPTION
Script makes a typescript of everything printed on your terminal. It is useful for students who need a hardcopy record of an interactive session as proof of an assignment, as the typescript file can be printed out later with lpr(1). If the argument file is given, script saves all dialogue in file. If no file name is given, the typescript is saved in the file typescript. Options: -a Append the output to file or typescript, retaining the prior contents. -c COMMAND Run the COMMAND rather than an interactive shell. This makes it easy for a script to capture the output of a program that behaves differently when its stdout is not a tty. -f Flush output after each write. This is nice for telecooperation: One person does `mkfifo foo; script -f foo' and another can super- vise real-time what is being done using `cat foo'. -q Be quiet. -t Output timing data to standard error. This data contains two fields, separated by a space. The first field indicates how much time elapsed since the previous output. The second field indicates how many characters were output this time. This information can be used to replay typescripts with realistic typing and output delays. The script ends when the forked shell exits (a control-D to exit the Bourne shell (sh(1)), and exit, logout or control-d (if ignoreeof is not set) for the C-shell, csh(1)). Certain interactive commands, such as vi(1), create garbage in the typescript file. Script works best with commands that do not manipulate the screen, the results are meant to emulate a hardcopy terminal. ENVIRONMENT
The following environment variable is utilized by script: SHELL If the variable SHELL exists, the shell forked by script will be that shell. If SHELL is not set, the Bourne shell is assumed. (Most shells set this variable automatically). SEE ALSO
csh(1) (for the history mechanism), scriptreplay(1). HISTORY
The script command appeared in 3.0BSD. BUGS
Script places everything in the log file, including linefeeds and backspaces. This is not what the naive user expects. AVAILABILITY
The script command is part of the util-linux-ng package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/. Linux July 30, 2000 Linux
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