I'm running the chkconfig --list
command on a server with SLES 10 SP2 (SUSE Linux Enterprise Server 10 Service Pack 2). I know the meaning of runlevels from 0 to 6, but some lines also have a "S" (uppercase S) and one line has a "B" (uppercase B).
Let me quote here a snipped output of "chkconfig --list
" - note that, on one hand, the "kbd
", "microcode
", "splash
", "splash_early
" lines have the "S:on
" at the end of the line and that, on the other hand, the "sysstat
" line finishes with "B:on
":
# chkconfig --list
(...)
dbus 0:off 1:off 2:off 3:on 4:off 5:on 6:off
(...)
kbd 0:off 1:on 2:on 3:on 4:off 5:on 6:off S:on
(...)
microcode 0:off 1:on 2:on 3:on 4:off 5:on 6:off S:on
(...)
splash 0:off 1:on 2:on 3:on 4:off 5:on 6:off S:on
splash_early 0:off 1:off 2:on 3:on 4:off 5:on 6:off
(...)
syslog 0:off 1:off 2:on 3:on 4:off 5:on 6:off
sysstat 0:off 1:off 2:off 3:off 4:off 5:off 6:off B:on
(...)
I have read the Serverfault Question & Answer Explanation of chkconfig Levels but the only Answer there mentions the runlevels 0 to 6 only.
The manpage for chkconfig in this machine also only mentions runlevels zero to six:
# man chkconfig
(...)
LIST MODE
List mode prints for each specified service a line that consists of the
service name and for runlevels zero to six **on** or **off** depending if the
service will be started or not. **on** will be printed in bright green
if the output is written to a terminal. If the --deps option is given,
the names of the services that must be started before this service is
appended to each line. The inetd/xinetd services are listed in extra
sections.
(...)
So, my question is: what is / could be the meaning of the "S" and "B" in the chkconfig --list
output ?
(I'm guessing that "S" might be "Startup" and that "B" could be "Boot" but I'm not finding any related documentation or web page that addresses this.)