$ git status
$ git log --raw
$ svn status
$ cd <your drupal root>
$ find . -name "*.php" | xargs ls -al
$ find . -name "*.inc" | xargs ls -al
Check the date/time and filename
$ mkdir /tmp/log-2014-test/
$ cd /tmp/log-2014-test/
$ cp /var/log/apache2/<your-drupal-log-prefix>.* ./
$ gunzip *.gz
$ grep -i "SELECT " *
$ grep -i "WHERE " *
$ diff -Nrup <your_drupal_folder> <original_7.x_folder>
$ diff -q <your_drupal_folder_file> <orig_drupal_folder_file> | cut -d' ' -f4 | xargs md5sum
$ diff -rq /var/www/my_drupal_7.2/ /tmp/orig_drupal_7.2/ | awk '{print $2 " " $4}' | xargs md5sum
b467629894be0f966cef4c73bfb41485 /var/www/my_drupal_7.2/modules/blog/1234.php
dc7ae9512f240ef886ab089ab614aa0e /tmp/orig_drupal_7.2/modules/blog/1234.php