examples/inittab - busybox - Git at Google


            
            # /etc/inittab init(8) configuration for BusyBox

            
            #

            
            # Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>

            
            #

            
            #

            
            # Note, BusyBox init doesn't support runlevels.  The runlevels field is

            
            # completely ignored by BusyBox init. If you want runlevels, use sysvinit.

            
            #

            
            #

            
            # Format for each entry: <id>:<runlevels>:<action>:<process>

            
            #

            
            # <id>: WARNING: This field has a non-traditional meaning for BusyBox init!

            
            #

            
            #	The id field is used by BusyBox init to specify the controlling tty for

            
            #	the specified process to run on.  The contents of this field are

            
            #	appended to "/dev/" and used as-is.  There is no need for this field to

            
            #	be unique, although if it isn't you may have strange results.  If this

            
            #	field is left blank, then the init's stdin/out will be used.

            
            #

            
            # <runlevels>: The runlevels field is completely ignored.

            
            #

            
            # <action>: Valid actions include: sysinit, wait, once, respawn, askfirst,

            
            #                                  shutdown, restart and ctrlaltdel.

            
            #

            
            #	sysinit actions are started first, and init waits for them to complete.

            
            #	wait actions are started next, and init waits for them to complete.

            
            #	once actions are started next (and not waited for).

            
            #

            
            #	askfirst and respawn are started next.

            
            #	For askfirst, before running the specified process, init displays

            
            #	the line "Please press Enter to activate this console"

            
            #	and then waits for the user to press enter before starting it.

            
            #

            
            #	shutdown actions are run on halt/reboot/poweroff, or on SIGQUIT.

            
            #	Then the machine is halted/rebooted/powered off, or for SIGQUIT,

            
            #	restart action is exec'ed (init process is replaced by that process).

            
            #	If no restart action specified, SIGQUIT has no effect.

            
            #

            
            #	ctrlaltdel actions are run when SIGINT is received

            
            #	(this might be initiated by Ctrl-Alt-Del key combination).

            
            #	After they complete, normal processing of askfirst / respawn resumes.

            
            #

            
            #	Note: unrecognized actions (like initdefault) will cause init to emit

            
            #	an error message, and then go along with its business.

            
            #

            
            # <process>: Specifies the process to be executed and it's command line.

            
            #

            
            # Note: BusyBox init works just fine without an inittab. If no inittab is

            
            # found, it has the following default behavior:

            
            #	::sysinit:/etc/init.d/rcS

            
            #	::askfirst:/bin/sh

            
            #	::ctrlaltdel:/sbin/reboot

            
            #	::shutdown:/sbin/swapoff -a

            
            #	::shutdown:/bin/umount -a -r

            
            #	::restart:/sbin/init

            
            #	tty2::askfirst:/bin/sh

            
            #	tty3::askfirst:/bin/sh

            
            #	tty4::askfirst:/bin/sh

            
            #

            
            # Boot-time system configuration/initialization script.

            
            # This is run first except when booting in single-user mode.

            
            #

            
            ::sysinit:/etc/init.d/rcS


            # /bin/sh invocations on selected ttys

            
            #

            
            # Note below that we prefix the shell commands with a "-" to indicate to the

            
            # shell that it is supposed to be a login shell.  Normally this is handled by

            
            # login, but since we are bypassing login in this case, BusyBox lets you do

            
            # this yourself...

            
            #

            
            # Start an "askfirst" shell on the console (whatever that may be)

            
            ::askfirst:-/bin/sh

            
            # Start an "askfirst" shell on /dev/tty2-4

            
            tty2::askfirst:-/bin/sh

            
            tty3::askfirst:-/bin/sh

            
            tty4::askfirst:-/bin/sh


            # /sbin/getty invocations for selected ttys

            
            tty4::respawn:/sbin/getty 38400 tty5

            
            tty5::respawn:/sbin/getty 38400 tty6


            # Example of how to put a getty on a serial line (for a terminal)

            
            #::respawn:/sbin/getty -L ttyS0 9600 vt100

            
            #::respawn:/sbin/getty -L ttyS1 9600 vt100

            
            #

            
            # Example how to put a getty on a modem line.

            
            #::respawn:/sbin/getty 57600 ttyS2


            # Stuff to do when restarting the init process

            
            ::restart:/sbin/init


            # Stuff to do before rebooting

            
            ::ctrlaltdel:/sbin/reboot

            
            ::shutdown:/bin/umount -a -r

            
            ::shutdown:/sbin/swapoff -a
	# /etc/inittab init(8) configuration for BusyBox
	#
	# Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
	#
	#
	# Note, BusyBox init doesn't support runlevels. The runlevels field is
	# completely ignored by BusyBox init. If you want runlevels, use sysvinit.
	#
	#
	# Format for each entry: <id>:<runlevels>:<action>:<process>
	#
	# <id>: WARNING: This field has a non-traditional meaning for BusyBox init!
	#
	# The id field is used by BusyBox init to specify the controlling tty for
	# the specified process to run on. The contents of this field are
	# appended to "/dev/" and used as-is. There is no need for this field to
	# be unique, although if it isn't you may have strange results. If this
	# field is left blank, then the init's stdin/out will be used.
	#
	# <runlevels>: The runlevels field is completely ignored.
	#
	# <action>: Valid actions include: sysinit, wait, once, respawn, askfirst,
	# shutdown, restart and ctrlaltdel.
	#
	# sysinit actions are started first, and init waits for them to complete.
	# wait actions are started next, and init waits for them to complete.
	# once actions are started next (and not waited for).
	#
	# askfirst and respawn are started next.
	# For askfirst, before running the specified process, init displays
	# the line "Please press Enter to activate this console"
	# and then waits for the user to press enter before starting it.
	#
	# shutdown actions are run on halt/reboot/poweroff, or on SIGQUIT.
	# Then the machine is halted/rebooted/powered off, or for SIGQUIT,
	# restart action is exec'ed (init process is replaced by that process).
	# If no restart action specified, SIGQUIT has no effect.
	#
	# ctrlaltdel actions are run when SIGINT is received
	# (this might be initiated by Ctrl-Alt-Del key combination).
	# After they complete, normal processing of askfirst / respawn resumes.
	#
	# Note: unrecognized actions (like initdefault) will cause init to emit
	# an error message, and then go along with its business.
	#
	# <process>: Specifies the process to be executed and it's command line.
	#
	# Note: BusyBox init works just fine without an inittab. If no inittab is
	# found, it has the following default behavior:
	# ::sysinit:/etc/init.d/rcS
	# ::askfirst:/bin/sh
	# ::ctrlaltdel:/sbin/reboot
	# ::shutdown:/sbin/swapoff -a
	# ::shutdown:/bin/umount -a -r
	# ::restart:/sbin/init
	# tty2::askfirst:/bin/sh
	# tty3::askfirst:/bin/sh
	# tty4::askfirst:/bin/sh
	#
	# Boot-time system configuration/initialization script.
	# This is run first except when booting in single-user mode.
	#
	::sysinit:/etc/init.d/rcS

	# /bin/sh invocations on selected ttys
	#
	# Note below that we prefix the shell commands with a "-" to indicate to the
	# shell that it is supposed to be a login shell. Normally this is handled by
	# login, but since we are bypassing login in this case, BusyBox lets you do
	# this yourself...
	#
	# Start an "askfirst" shell on the console (whatever that may be)
	::askfirst:-/bin/sh
	# Start an "askfirst" shell on /dev/tty2-4
	tty2::askfirst:-/bin/sh
	tty3::askfirst:-/bin/sh
	tty4::askfirst:-/bin/sh

	# /sbin/getty invocations for selected ttys
	tty4::respawn:/sbin/getty 38400 tty5
	tty5::respawn:/sbin/getty 38400 tty6

	# Example of how to put a getty on a serial line (for a terminal)
	#::respawn:/sbin/getty -L ttyS0 9600 vt100
	#::respawn:/sbin/getty -L ttyS1 9600 vt100
	#
	# Example how to put a getty on a modem line.
	#::respawn:/sbin/getty 57600 ttyS2

	# Stuff to do when restarting the init process
	::restart:/sbin/init

	# Stuff to do before rebooting
	::ctrlaltdel:/sbin/reboot
	::shutdown:/bin/umount -a -r
	::shutdown:/sbin/swapoff -a