udo
udo is an extremely stripped-down sudo/doas imitation.
config
the config file is located at /etc/udo.conf. it is a space-separated list of UIDs that are allowed to use udo. this file should probably contain 0 at some point.
installation
# make install
uninstallation
# make uninstall, but why would you want to?
why does it segfault?
it only segfaults if you have done something wrong. do not do wrong things.