Bash script to list all changed files in certain period

13-05-2012 | Remy van Elst


Table of Contents


This is a little script I wrote and use to get a daily report of all the files that have changed on my servers. What it does is list all the files that are modified within a certain time period from a given directory. It can also be run from a desktop machine, or any machine which runs bash, find and ls. Usage is simple, save the script, chmod +x it, then run (./report.sh). If you want a specific directory to be scanned run it like ./report.sh /var/www/my/dir

This is the script:

#!/bin/bash
### Copyright (c) 2012 Remy van Elst
#Permission is hereby granted, free of charge, to any person obtaining a copy
#of this software and associated documentation files (the "Software"), to deal
#in the Software without restriction, including without limitation the rights
#to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#copies of the Software, and to permit persons to whom the Software is
#furnished to do so, subject to the following conditions:
#
#The above copyright notice and this permission notice shall be included in
#all copies or substantial portions of the Software.
#
#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
#THE SOFTWARE.


#Change these values to your need
#Exclude hidden directories, 0=exclude,1=include
HIDDEN=0
#Time parameter in days for modified files
MTIME="-1"
#Directory to look for files, if unset use current dir
FILEDIR=$1
if [ -z "$FILEDIR" ]; then
FILEDIR="./";
fi
SVERSION="0.2"
HOSTPC=`hostname`
HOSTUSER=`whoami`

#Now do the  find thing

case "$HIDDEN" in

    0) echo "Reporting all files modified in last "$MTIME" period in directory "$FILEDIR" for system "$HOSTPC", running as user "$HOSTUSER" excluding hidden files."
    echo "Date: `date`"
    echo "START OF FILE REPORT"
    find $FILEDIR -type f -mtime $MTIME ! -path "*/.*" | xargs -r ls -lh 2>/dev/null
    echo "END OF FILE REPORT"
    echo "Report script version $SVERSION by raymii.org"
    ;;

    1) echo "Reporting all files modified in last "$MTIME" period in directory "$FILEDIR" for system "$HOSTPC", running as user "$HOSTUSER"."
    echo "Date: `date`"
    echo "START OF FILE REPORT"
    find $FILEDIR -type f -mtime $MTIME | xargs -r ls -lh 2>/dev/null
    echo "END OF FILE REPORT"
    echo "Report script version $SVERSION by raymii.org"
    ;;

esac
#END OF SCRIPT

Sample output looks like this:

remy@USN4 ~/test $ ./report.sh ~
Reporting all files modified in last "-1" period in directory "/home/remy" for system "USN4" excluding hidden files.
Date: Fri Mar 30 13:20:59 CEST 2012
START OF FILE REPORT
-rw-rw-r-- 1 remy remy    6 2012-03-30 12:54 /home/remy/hoi.test
-rw-rw-r-- 1 remy remy    0 2012-03-30 12:55 /home/remy/test/hallo
-rw-rw-r-- 1 remy remy    0 2012-03-30 12:55 /home/remy/test/i
-rw-rw-r-- 1 remy remy    0 2012-03-30 13:15 /home/remy/test/me.f
-rwxrwxr-x 1 remy remy 1.2K 2012-03-30 13:20 /home/remy/test/report.sh
END OF FILE REPORT
Report script version 0.2 by raymii.org

If you want to filter out certain directories you can add grep to the find line in the script to filter out directories:

find $FILEDIR -type f -mtime $MTIME ! -path "*/.*" | grep -v "/sys/" | grep -v "/proc/" | grep -v "/run/" | grep -v "/dev/" | xargs -r ls -lh 2>/dev/null

The above command wil filter out the /sys/ /proc/ /run/ and /dev/ directories. Edit it to your needs. I've got a crontab like this, it saves it to the /var/log/freport/ directory so you can check it later or email it:

00 */8 * * * /root/report.sh / > /var/log/freport/filereport`date +%F`.txt

Tags: auditing, bash, changed-files,