Manage Debian auto startup scripts

Debian LinuxDebian uses a Sys-V like init system for executing commands when the system runlevel changes – for example at bootup and shutdown time. Its startup files are stored in /etc/init.d/ and symbolic linked within the /etc/rcX.d/ directories. Debian Linux comes with different utilities to manage these startup file, here we’ll show two examples on managing these system init scripts.

1, rcconf

This tool configures system services in connection with system runlevels. It turns on/off services using the scripts in /etc/init.d/. Rcconf works with System-V style runlevel configuration. It is a Text User Interface (TUI) frontend to the update-rc.d command.

To start rcconf, login as root and type the command “rcconf“, then select the service that you would like to enable or disable, and press Tab to apply a change.

A similar command is sysv-rc-conf, you can make more specified choices in this TUI based configuration tool.

2, sysv-rc

Sysv-rc provides a terminal interface for managing “/etc/rcX.d/” symlinks. With the help of update-rc.d, you can allow turning services on or off simply. Actually it’s much what chkconfig does in Redhat/CentOS, which means you can edit startup scripts for any runlevel.

By default sysv-rc is installed even in a minimal installation. Otherwise you need to run “apt-get install sysv-rc” to install it. Here’re some common usage examples for update-rc.d:

To remove the service SERVICE-NAME:

update-rc.d -f SERVICE-NAME remove

To add the service SERVICE-NAME:

update-rc.d SERVICE-NAME defaults
update-rc.d SERVICE-NAME defaults 29

The argument 29 is optional, which ensures that SERVICE-NAME is called after all scripts whose number is less than 29 have completed, and before all scripts whose number is 30 or greater.

To start the script SERVICE-NAME in runlevels 2345 and stop in 456, run (as root):

update-rc.d SERVICE-NAME start 2 3 4 5 . stop 0 1 6 .
update-rc.d SERVICE-NAME start 30 2 3 4 5 . stop 70 0 1 6 .

You can find more details of this command by running “man 8 update-rc.d”.

Share this post

2 thoughts on “Manage Debian auto startup scripts

Post Comment