[TUHS] History of cal(1)?

[John Levine via TUHS]

It appears that segaloco via TUHS <segaloco at protonmail.com> said:
>It also brought to mind the question of whether a UNIX superblock for instance could be placed under copyright?  The files on the disk, sure, but since you can't easily put
>elaborate license comments at the top of the filesystem itself, is filesystem metadata inherently "un-copyright-able"?  Mostly interested in UNIX filesystems on this subject
>but if other systems or general wisdom prevail in the discussion then that bit can fork to COFF.

Copyright notices in the U.S. haven't been needed since we joined Berne in 1989.

On the other hand, I think there is a strong argument that the metadata is functional so it's
not eligible for copyright, or even if it is, Oracle vs. Google said (rather oversimplifying)
copying is OK if it's essential to making something interoperate.

R's,
John

PS: We're pretty deep in the weeds here.