systemd is a technique and service manager for Linux, compatible with SysV and LSB init scripts.
systemd provides aggressive parallelization capabilities, makes use of socket and D-Bus activation for starting services, offers on-starting of daemons, keeps track of processes using Linux cgroups, supports snapshotting and restoring of the system state, maintains mount and automount points and implements an elaborate transactional dependency-based service control logic. It can work as a drop-in replacefor sysvinit.
apt-get update && apt-get install systemd
Useful SystemD commands on Debian Squeeze:
List all running services :
Start/stop or enable/disable services: