I've been doing more and more of my little one-off scripts in Scheme these days. I'm using the Chicken implementation because it lets me compile my programs (a big help sometimes) and because it has enough of the POSIX calls I need.
As is customary, I have started to amass libraries. Many of them are extremely idiosyncratic, but a few might be more generally useful, so I make them available here. Most are related to Unix systems administration tasks somehow.