A chkconfig alternative to Ubuntu

sysv-rc-conf is an alternate option for Ubuntu.

# sudo apt-get install sysv-rc-conf

# sysv-rc-conf --list xxxx

Also, to disable a process at boot, you could simply disable it by:

# sudo update-rc.d apache2 disable

and then if you would like to enable it again:

# sudo update-rc.d apache2 enable