Where to find the Ubuntu inittab
In most variants of GNU/Linux the init daemon and its configuration file /etc/inittab are used to define things like runlevels and consoles. In an effort to improve boot time, system performance and ease scripted configuration, ubuntu has implemented upstart, an event-based replacement for the traditional init daemon. This is good for the most part, but in different versions ubuntu upstart is configured in different locations which can be quite confusing.
Aside from the change in location, the items that traditionally would be represented by a line in /etc/inittab have been split up into individual files. Despite this difference, the syntax used within the individual files is very familiar.
Where did the ubuntu inittab go?
Here’s where “inittab” lives on different versions of ubuntu.
Ubunutu inittab equivalent for Karmic (9.10) and newer:
Init functionality has been broken out into individual files located in /etc/init.
# ls /etc/init autofs.conf mountall-shell.conf rsyslog.conf avahi-daemon.conf mounted-debugfs.conf screen-cleanup.conf console.conf mounted-dev.conf setvtrgb.conf console-setup.conf mounted-proc.conf shutdown.conf container-detect.conf mounted-run.conf ssh.conf control-alt-delete.conf mounted-tmp.conf statd.conf cron.conf mounted-var.conf statd-mounting.conf cryptdisks-enable.conf networking.conf tty1.conf cryptdisks-udev.conf network-interface.conf tty2.conf dbus.conf network-interface-container.conf tty3.conf dmesg.conf network-interface-security.conf tty4.conf ecryptfs-utils-restore.conf plexmediaserver.conf tty5.conf ecryptfs-utils-save.conf plymouth.conf tty6.conf failsafe.conf plymouth-log.conf udev.conf flush-early-job-log.conf plymouth-splash.conf udev-fallback-graphics.conf gssd.conf plymouth-stop.conf udev-finish.conf hostname.conf plymouth-upstart-bridge.conf udevmonitor.conf hvc0.conf portmap-boot.conf udevtrigger.conf hwclock.conf portmap.conf upstart-socket-bridge.conf hwclock-save.conf portmap-wait.conf upstart-udev-bridge.conf idmapd.conf procps.conf ureadahead.conf module-init-tools.conf rc.conf ureadahead-other.conf mountall.conf rcS.conf wait-for-state.conf mountall-net.conf rc-sysinit.conf mountall-reboot.conf
Ubuntu inittab equivalent for Jaunty (9.04), Feisty (7.04) & Edgy (6.10)
Init functionality is broken out into individual files located in the /etc/event.d/ directory.
Ubunutu inittab for Dapper (6.06) and Earlier
These versions use a standard /etc/init file.