Init.d

The Windows analog to init.d is the Services MMC. In /etc/init.d, you can find scripts that start, stop, restart, or check the status of running background programs, just like the Services MMC. When you install a program, it usually drops the script into init.d, leaving everything in a convenient place. Typically the script is the name of the program. As an example, /etc/init.d/bind9 is the BIND script. You then throw a command at that script, like the following:

/etc/init.d/bind9 start /etc/init.d/bind9 stop /etc/init.d/bind9 reload /etc/init.d/bind9 restart

Reload actually tells BIND to reload its config files, rather than actually restarting.