http://t3x.org/s9fes/ext.html (light|dark)
total 12 drwxr-xr-x 2 nmh nmh 512 Jan 4 2023 csv drwxr-xr-x 2 nmh nmh 512 Jan 4 2023 curses drwxr-xr-x 2 nmh nmh 512 Jan 4 2023 sys-unix