List all installed daemons on debian,

ubuntu and linux mint which can cost you a quick boot and a responsive system.

trigger@yourhost:~$ dpkg -S /etc/init.d/* | grep -Eo ".*:" | sed "s/://g" | sort | uniq
acpid
alsa-utils
anacron
at
avahi-daemon
bluez
cups-browsed
cups-daemon
dbus
fglrx-atieventsd
hdparm
ifupdown
kbd
kmod
lightdm
lvm2
netfilter-persistent
network-manager
ppp
procps
pulseaudio
rsync
rsyslog
sane-utils
smartmontools
sudo
udev
uml-utilities
util-linux
virtualbox
x11-common

(Basically this command links all files in /etc/init.d/ to their debian package and shows them.)