s6 and runit get a mention at http://cloux.org/init/ .
It's not a very technical or in-depth treatment, resorting more to
quotations. For example: There's a lot more to say about system 5 rc,
which it conflates with system 5 init. And AIX had more run levels than
the eleven that it claims.
* http://jdebp.eu./FGA/system-5-rc-problems.html
It misses entirely that s6's "unusual service commands" are direct
descendants of Bernstein's svc command and not really unusual at all.
* http://cr.yp.to/daemontools/svc.html
* http://untroubled.org/daemontools-encore/svc.8.html
* http://b0llix.net/perp/site.cgi?page=perpctl.8
* http://www.skarnet.org/software/s6/s6-svc.html
* http://jdebp.eu./Softwares/nosh/guide/svc.html
And that runit's "weird svlogd logger filter configuration syntax" is a
direct descendant of Bernstein's multilog filter.
Also, the command that it is hunting for in another section is systemctl
list-units --state=failed .