Jonathan de Boyne Pollard:
Furthermore: In this *particular* regard, the developer-provided doco
actually *is* clear. The upstart manual page for inittab has been
warning that the file is obsolete for over ten years, and that manual
page is copied all over the WWW making it fairly easy to come across.
(Examples: https://linux.die.net/man/5/inittab
https://askubuntu.com/questions/34308/
https://serverfault.com/questions/147430/
http://manpages.ubuntu.com/manpages/precise/man5/inittab.5.html)
The systemd people have not explicitly documented inittab, as the
upstart people did, although they have explicitly documented run
levels as "obsolete" in the systemd manual page for runlevel. This,
too, has been copied around the WWW, albeit somewhat less. (Examples:
https://manpages.debian.org/stretch/systemd-sysv/runlevel.8.en.html
http://man7.org/linux/man-pages/man8/runlevel.8.html
https://www.mankier.com/8/runlevel)
Gene Heskett:
Its becoming obsolete is NOT mentioned in my wheezy approved and
supplied man page for it, I just read it this instant. So if you call
it widely publicized it fails that definition AFAIAC.
Debian 7 has those very manual pages:
* https://manpages.debian.org/wheezy/upstart/inittab.5.en.html
* https://manpages.debian.org/wheezy/systemd-sysv/runlevel.8.en.html