logGen is a command-line utility (for now) for detecting filesystem changes after a preference change or package installation. This is primarily useful when creating your own .pkg files so you know what you need to package.
You can download the logGen installer here: loggen-2.2.dmg
LogGen is written by Phil Holland with changes by Dave Pugh, Chris Grieb and J. Billings in 2008. The script was available on http://lsa.umich.edu and when it disappeared I decided to host it for Mac Admins. I still occasionally use it to capture files from hostile package installers.
Please read the updated documentation by typing
perldoc /usr/local/sbin/logGen .
LOGGEN(1) User Contributed Perl Documentation LOGGEN(1) NAME logGen - report filesystem changes SYNOPSYS sudo /usr/local/sbin/logGen [--all|-a] [--fast|-f] [--root|-r <dir>] [--user|-u] [orig.dat] sudo /usr/local/sbin/logGen [--all|-a] [--fast|-f] [--root|-r <dir>] [--user|-u] [new.dat] [orig.dat] sudo /usr/local/sbin/logGen [--all|-a] [--fast|-f] [--root|-r <dir>] [--user|-u] [new.dat] [orig.dat] > changes.txt DESCRIPTION logGen can be used to detect what files have changed as a result of a configuration change or installing a package. It accomplishes this by utilizing a number of methods, but mostly using the modification date and a checksum of each file. Lists will be generated for files that are added, changed, or deleted, and will include only the directory if everything within it has been added, changed, or deleted. A number of directories are automatically ignored in the search including your home directory, temporary directories, network mounts, and non-root volumes. As with many tools, logGen cannot accurately detect changes in resource forks of files. Before performing any changes or installations you'd like to detect, take a baseline snapshot of the filesystem by running: sudo /usr/local/sbin/logGen orig.dat This will write out a data file (orig.dat) containing a listing of each file and the information logGen has recorded about each file. This first pass can taken a very long time (even upwards of 30 minutes) depending on the speed of your machine and the number of files on your disk. Next, make the changes you'd like to detect, such as a preference change, installing new software, etc, and run logGen a second time. It is recommended (although not required) to redirect STDOUT to a file for later examination. sudo /usr/local/sbin/logGen new.dat orig.dat > changes.txt This will write out a new data file (new.dat) containing a new, current listing of each file and the information logGen has recorded about each file. Next, the data is compared between the new.dat and orig.dat files and the changes are summarized and printed to STDOUT, and in this example saved to changes.txt. This second execution of logGen gener- ally takes much less time than the first. All of the filenames are changable. If you omit a filename for the original data file (orig.dat in the above examples) it will default to <currentEpochTime>.log, such as "1076949440.log". OPTIONS Three options are available: --all (or -a): Check all directories, including /tmp, /var, etc. This still ignores things like /Network and /Volumes, though, to avoid checking lots of things you really shouldn't check. --fast (or -f): Skips MD5 checks of files - the only downside to this is that files whose timestamps have changed but whose contents remain identical will be reported as changed even though they didn't. --root <dir> (or -r <dir>): Sets the root directory of the search to the specified directory. This could be useful if, for example, you're just looking for what preference changed in /Library/Preferences/ --user (or -u): Includes the /Users directory in the scan. Normally this directory is ignored. The order of the options DOES matter - They should be typed in the same order as they are listed here. I felt lazy programming that day... Sorry. EXAMPLE % sudo /usr/local/sbin/logGen orig.dat logGen -- version 1.0 Copyright 2003 - The Regents of the University of Michigan All Rights Reserved 361883 new files: --------------- / --------------- 0 changed files 0 deleted files 0 files with resource forks 0 files with special permissions % sudo /usr/local/sbin/logGen new.dat orig.dat logGen -- version 1.0 Copyright 2003 - The Regents of the University of Michigan All Rights Reserved 1 new files: --------------- /Library/NewDir/ --------------- 1 changed files: --------------- /Library/TestDir2/someFile --------------- 1 deleted files: --------------- /Library/TestDir/ --------------- 1 files with resource forks: --------------- /Library/iconFile --------------- 2 files with special permissions: --------------- /Library/aFileSetUID ( setuid ) /Library/anotherFile ( setgid world_writable ) --------------- AUTHORS Originally written by Phil Holland at the University of Michigan. Numerous changes provided by Dave Pugh at the University of Michigan. Questions, requests, comments, and code changes should be sent to firstname.lastname@example.org COPYRIGHT COPYRIGHT 2005-2008 THE REGENTS OF THE UNIVERSITY OF MICHIGAN ALL RIGHTS RESERVED PERMISSION IS GRANTED TO USE, COPY, CREATE DERIVATIVE WORKS AND REDIS- TRIBUTE THIS SOFTWARE AND SUCH DERIVATIVE WORKS FOR ANY PURPOSE, SO LONG AS NO FEE IS CHARGED, AND SO LONG AS THE COPYRIGHT NOTICE ABOVE, THIS GRANT OF PERMISSION, AND THE DISCLAIMER BELOW APPEAR IN ALL COPIES MADE; AND SO LONG AS THE NAME OF THE UNIVERSITY OF MICHIGAN IS NOT USED IN ANY ADVERTISING OR PUBLICITY PERTAINING TO THE USE OR DISTRIBUTION OF THIS SOFTWARE WITHOUT SPECIFIC, WRITTEN PRIOR AUTHORIZATION. THIS SOFTWARE IS PROVIDED AS IS, WITHOUT REPRESENTATION FROM THE UNI- VERSITY OF MICHIGAN AS TO ITS FITNESS FOR ANY PURPOSE, AND WITHOUT WAR- RANTY BY THE UNIVERSITY OF MICHIGAN OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MER- CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE REGENTS OF THE UNIVERSITY OF MICHIGAN SHALL NOT BE LIABLE FOR ANY DAMAGES, INCLUDING SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WITH RESPECT TO ANY CLAIM ARISING OUT OF OR IN CONNECTION WITH THE USE OF THE SOFT- WARE, EVEN IF IT HAS BEEN OR IS HEREAFTER ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. If you do make any changes, it would be appreciated if you submitted them back to email@example.com perl v5.8.6 2008-02-12 LOGGEN(1)