I have a five year old Ubuntu system that I've been upgrading, mostly cleanly, but recently there is too much crud in the OS.
I'm planning to do a clean install to lubuntu 12.10.
However, I don't want to lose any of my system configuration. Luckily,
/home is in its own partition.
I do know most of my configuration changes are in
/etc/ so I will definitely make a backup of that directory.
Is there any script or tool which will let me detect changes made in the OS configuration directories (essentially, detect if there is a diff) so I can more safely do my clean install.
I'm sure without it, I could rebuild a system, but it would definitely save me a lot of time if I knew what has changed.