On Sun, Oct 21, 2018 at 11:18:39PM +0200, Arnt Karlsen wrote: > On Sun, 21 Oct 2018 19:07:36 +0200, Didier wrote in message > <826ba68a-6289-d047-7e74-d970996d2...@in2p3.fr>: > > > Le 21/10/2018 à 19:01, Didier Kryn a écrit : > > > I'm not an expert, but it seems to me the answer is in inittab; > > > the following line invokes the daemon which launches all the > > > scripts: > > > > > > si::sysinit:/etc/init.d/rcS > > > > > > Well, there is also the following lines: > > > > l0:0:wait:/etc/init.d/rc 0 > > l1:1:wait:/etc/init.d/rc 1 > > l2:2:wait:/etc/init.d/rc 2 > > l3:3:wait:/etc/init.d/rc 3 > > l4:4:wait:/etc/init.d/rc 4 > > l5:5:wait:/etc/init.d/rc 5 > > l6:6:wait:/etc/init.d/rc 6 > > ..how many "runlevels" _can_ we add here? Can we name them freely? > > ..I'm not saying we should beat a stuffed "sysctl isolate $service" > systemd pig, just noting we have numbers and letters and lower and > upper cases etc and I've never seen anyone try "telinit 666" nor > 'init Tor' nor 'init FlightGear' etc to swap box configs to do specific > things like surf porn, investigate corruption or race quad copters > in FlightGear online, and to "kill off everything else" using cpu, > gpu or ram etc, automagically. >
sysvinit currently supports runlevels 0-6, with 0 and 6 have special, fixed meaning. There is *currently* no way of naming a runlevel using more than one character, due to the way the "change runlevel" information is communicated to the init process. In Debian/Devuan, runlevel 1 has traditionally been assigned to single-user mode, and runlevel 2 to multi-user mode. But there is no written rule about that (meaning that a sysadmin can move and configure runlevels around as she wishes). HTH KatolaZ -- [ ~.,_ Enzo Nicosia aka KatolaZ - Devuan -- Freaknet Medialab ] [ "+. katolaz [at] freaknet.org --- katolaz [at] yahoo.it ] [ @) http://kalos.mine.nu --- Devuan GNU + Linux User ] [ @@) http://maths.qmul.ac.uk/~vnicosia -- GPG: 0B5F062F ] [ (@@@) Twitter: @KatolaZ - skype: katolaz -- github: KatolaZ ]
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