Thanks for the useful stats and commands, Olaf. My observations below.

Olaf Meeuwissen wrote:
> Hi Joel,
>
> Joel Roth via Dng <dng@???> writes:
>
> > On Sun, Aug 06, 2023 at 02:01:37PM +0900, Olaf Meeuwissen via Dng wrote:
> >> I poked around in the Contents files with `apt-file` on my Daedalus
> >> machine to get an idea of the *full* list of init.d scripts, whether
> >> installed or not. There are a whopping 1184 of them, 16 of which are
> >> provided by more than one binary package. The init.d files are spread
> >> out over 1076 binary packages, so some packages contain more than one.
> >
> > It may be worth testing if these ~1000 binary packages
> > all contain a systemd init unit. If a large portion of
> > debian packages lack this, debian devels are unlikely to
> > break them all by discontinuing support for sysvinit
> > scripts, even if systemd devels are pushing for it.
>
> Interesting idea. First, I collected lists of binary packages with
> init.d files and systemd *.service files.
>

>    apt-file search etc/init.d/ | cut -d:  -f1 | sort | uniq > init.d
>    apt-file search -x 'systemd/system/.+\.service' | cut -d: -f1 | sort | uniq > service

>
> Next, counts of packages that have both
>
> $ cat init.d service | sort | uniq -d | wc -l
> 774
>
> and those that only have one or the other
>
> $ cat init.d service | sort | uniq -u | wc -l
> 737
>
> Figuring out how many only have init.d files
>
> $ diff -U0 init.d service | grep -E '^-[^-]' | wc -l
> 302
>
> and how many only have *.service files
>
> $ diff -U0 init.d service | grep -E '^\+[^+]' | wc -l
> 435
>
> If interested in which packages were counted, leave of the `| wc -l`
> bit.
>
> BTW, did you know that systemd ships 113 *.service files itself? And
> that there are another 31 in systemd-* packages? And yet another five
> more in *-systemd packages?
>
> For comparison, initscripts "only" ships 25 init.d files.
>
> Disclaimer: I haven't looked at the contents of any of these files.
> Come to think of it, the init.d files include /etc/init.d/README :-P

I've noticed several popular projects with sysvinit script
but no systemd service unit. Among them cpufreqd, fetchmail,
lprng, sendmail-bin, x11-common.

As I suggested previously, there will have to be a big,
visible push to convert these projects to systemd service
units before sysvinit compatibility can be dropped entirely.

> Hope this helps,
> --
> Olaf Meeuwissen
>

--
Joel Roth