The scripts located in /etc/init.d are part of the bootup sequence of every Debian-like distro.
The directories /etc/rc?.d (? = S, 0 .. 6) contain relative links to those scripts. These links are named S<2-digit-number><original-name> or K<2-digit-number><original-name>.

The following runlevels are defined: N System bootup (NONE). S Single user mode (not to be switched to directly). 0 halt. 1 single user mode. 2 - 5 multi user mode. 6 reboot

Boot-Up Manager first scans all of your boot-related directories. They are:

  • /etc/init.d
  • /etc/rcS.d
  • /etc/rcx.d (with x=0 to x=6)

Analyzing scripts and symlinks, BUM will show you which of them are activated and which script is present on your system but not activated at boot time.


See http://www.marzocca.net/linux/bumdocs.html



In the last column of this view (Running) you will see a list of icons. These are their meanings:

the script has generated a service daemon, which is currently running.
the script has an associated service daemon, which is currently NOT running.
the script is a "one-shot" type. It provides initial settings at boot and does not run a service daemon.
BUM is not able to detect if the script is running a daemon.