1. /etc/rc0.d /etc/rc1.d /etc/rc2.d /etc/rc3.d /etc/rc4.d /etc/rc5.d /etc/rc6.d 2. zero 3. run-level name: K10xsession real name: xsession 4. run-level name: S90knoppix-reboot real name: knoppix-reboot 5. The rcS.d directory contains scripts that are executed by the /etc/init.d/rcS script when booting the system. Like all the rc?.d directories, it contains symbolic links to files under /etc/init.d/. 6. compatibility directory is /etc/rc.boot 7. no scripts found on Knoppix 8. not counting the README file (which is not executable), Knoppix has 114 executable scripts under /etc/init.d/ 9. /etc/init.d/ntpdate 10. Start-up script ntpdate sources file /etc/default/ntpdate if the file exists, even if the file is empty. An empty file does not define the NTPSERVERS variable, so the script exits because of the empty variable. Removing the empty file allows the ntpdate script to define NTPSERVERS="pool.ntp.org" and the script then works correctly.