3 ms·

Strictly speaking, of those three only upstart is actually a replacement for System 5 init. OpenRC and daemontools run under an init, and by and large replace

by JdeBP 11y ago

Strictly speaking, of those three only upstart is actually a replacement for System 5 init. OpenRC and daemontools run under an init, and by and large replace System 5 rc. There are two toolsets (soon to be three) in the daemontools family that provide a replacement for init: nosh and runit. daemontools itself does not, and has had more than a decade of people adapting it to run under init replacements because the vanilla system only targets late 1990s inits, including under upstart as a matter of fact. * http://homepage.ntlworld.com./jonathan.deboynepollard/FGA/daemontools-family.html http://homepage.ntlworld.com./jonathan.deboynepollard/FGA/da... * http://homepage.ntlworld.com./jonathan.deboynepollard/FGA/inittab-is-history.html http://homepage.ntlworld.com./jonathan.deboynepollard/FGA/in... * http://homepage.ntlworld.com./jonathan.deboynepollard/FGA/system-5-rc-problems.html http://homepage.ntlworld.com./jonathan.deboynepollard/FGA/sy...

simoncion 11y ago
So, strictly speaking, is SysV init more than what is described in init(8)? That is to say, is it more than * the parent of all processes, including orphans * the executer of various entries in /etc/inittab, depending on runlevel * the configurer of local and serial consoles * the handler of CTRL+ALT+DEL ?
- JdeBP 11y ago
  See http://unix.stackexchange.com/a/197472/5132 http://unix.stackexchange.com/a/197472/5132 as well as https://news.ycombinator.com/item?id=8907445 https://news.ycombinator.com/item?id=8907445 and https://news.ycombinator.com/item?id=8904429 https://news.ycombinator.com/item?id=8904429 .
  - simoncion 11y ago
    From one pedant to another, thanks for the correction, and the informative links! So, I guess that the Debian folks were incorrectly claiming that they were looking for a replacement init. They were looking for a replacement rc system, and were willing to accept a replacement init as part of the package.

by JdeBP 11y ago

simoncion 11y ago

So, strictly speaking, is SysV init more than what is described in init(8)? That is to say, is it more than * the parent of all processes, including orphans * the executer of various entries in /etc/inittab, depending on runlevel * the configurer of local and serial consoles * the handler of CTRL+ALT+DEL ?

JdeBP 11y ago
See http://unix.stackexchange.com/a/197472/5132 http://unix.stackexchange.com/a/197472/5132 as well as https://news.ycombinator.com/item?id=8907445 https://news.ycombinator.com/item?id=8907445 and https://news.ycombinator.com/item?id=8904429 https://news.ycombinator.com/item?id=8904429 .
- simoncion 11y ago
  From one pedant to another, thanks for the correction, and the informative links! So, I guess that the Debian folks were incorrectly claiming that they were looking for a replacement init. They were looking for a replacement rc system, and were willing to accept a replacement init as part of the package.