Recently I've found myself in need to reinstall the linux system, to change MBR partition to GPT. Before I do that though I need to find files I've had configured for my system, and I could use a bunch of applications for that, none of them though offer a holistic approach. So how about a diff walker (similiar to disk-usage walkers)? I could set up a directory with bare system and investigate what I've added manually. However options for that are limited, but it was easy to implement a simple version of it myself. With use of lf and recently added feature: on-load.