This may be a bit off topic but I am going to ask it anyway.
Is there a way to search multiple player.dat files for particular values? For example spawn point. I run a Building server that I took over when the original owner retired. Often I find extremely nice builds in the world and have no idea of who the player is that built them. However there usually is a bed. I have far too many files to go through them one at a time, (over 20,000) from the previous owner, though most only visited briefly. Is there a way to search all the player.dat files for these coords? Our policy is to maintain the Mega Builds, I would like to be able to give the players who built them credit for doing so, even if it is just a sign.