update-rc.d vs chkconfig

Question

I have tried to get my head around how to configure the application startups and shutdowns in linux. Can someone explain me what the difference between using update-rc and chkconfig is? Is it two ways of doing the exact same thing?

Answer 1

chkconfig - updates and queries runlevel information for system services

update-rc.d updates the System V style init script links /etc/rcrunlevel.d/NNname whose target is the script /etc/init.d/name.

Is it two ways of doing the exact same thing?

Yes. The equivalent to chkconfig is update-rc.d