The update-rc. d utility has already been mentioned, and is one of the primary command line interfaces for managing init scripts. However, there are several other utilities that are essentially a frontend for update -rc . d that make the administrator's job a little easier. The primary ones are bum and sysv-rc-conf.
The Boot Up Manager, or bum, is a graphical application for managing init scripts. It requires a window manager to run, and provides a nice interface showing what services are running and what scripts are enabled. Inadvanced mode, itwill also allow you to adjust individual run levels and run order.
As mentioned for the update -rc . d start and stop commands, adjusting script ordering is not recommended.
There is also a utility called sys-rc-conf. It uses the curses library to provide a full-screen text interface. Inits default mode, itwill not modify script order, although special options on the command line will allow this ifyou really need this functionality.
Both utilities are pretty much self-explanatory. Check the services you want, uncheck those you don't, and you can set or unset check marks for different run levels on the same script.
Frequently, you will need to execute a SysV script manually, either to check the status, or to restart a service that requires it. Although the script in /etc/init. d maybe executed manually, the recommended
method is to use the invoke-rc. d command, which ensures that system policy and run level constraints are satisfied.
