/var/dcc/libexec/updatedcc should automagically fetch, build, and
install the commercial or free version, depending on the .updatedcc_pfile
file, unless you have installed a version of Linux with the broken
default `sort` collating sequence since last upgrading. If so, an
easy way to get the old updatedcc script working is to delete the
entire /var/dcc/build/dcc directory before running updatedcc.