7.7. Sysvinit-2.88dsf

The Sysvinit package contains programs for controlling the startup, running, and shutdown of the system.

7.7.1. Installation of Sysvinit

Apply a patch to prevent installation of unneeded programs, and allow Sysvinit to be installed in /tools:

patch -Np1 -i ../sysvinit-2.88dsf-tools_updates-1.patch

Compile the package:

make -C src clobber
make -C src CC="${CC}"

Install the package:

make -C src ROOT=/tools install

7.7.2. Configuring Sysvinit

Create a new file /tools/etc/inittab by running the following:

cat > /tools/etc/inittab << "EOF"
# Begin /tools/etc/inittab


si::sysinit:/tools/etc/rc.d/init.d/rc sysinit

l0:0:wait:/tools/etc/rc.d/init.d/rc 0
l1:S1:wait:/tools/etc/rc.d/init.d/rc 1
l2:2:wait:/tools/etc/rc.d/init.d/rc 2
l3:3:wait:/tools/etc/rc.d/init.d/rc 3
l4:4:wait:/tools/etc/rc.d/init.d/rc 4
l5:5:wait:/tools/etc/rc.d/init.d/rc 5
l6:6:wait:/tools/etc/rc.d/init.d/rc 6

ca:12345:ctrlaltdel:/tools/sbin/shutdown -t1 -a -r now



The following command adds the standard virtual terminals to /tools/etc/inittab. If your system only has a serial console skip the following command:

cat >> /tools/etc/inittab << "EOF"
1:2345:respawn:/tools/sbin/agetty --noclear -I '\033(K' tty1 9600
2:2345:respawn:/tools/sbin/agetty --noclear -I '\033(K' tty2 9600
3:2345:respawn:/tools/sbin/agetty --noclear -I '\033(K' tty3 9600
4:2345:respawn:/tools/sbin/agetty --noclear -I '\033(K' tty4 9600
5:2345:respawn:/tools/sbin/agetty --noclear -I '\033(K' tty5 9600
6:2345:respawn:/tools/sbin/agetty --noclear -I '\033(K' tty6 9600


If your system has a serial console, run the following command to add the entry to /tools/etc/inittab.

cat >> /tools/etc/inittab << "EOF"
c0:12345:respawn:/tools/sbin/agetty --noclear 115200 ttyS0 vt100


Finally, add the end line to /tools/etc/inittab.

cat >> /tools/etc/inittab << "EOF"
# End /tools/etc/inittab

The -I '\033(K' option tells agetty to send this escape sequence to the terminal before doing anything else. This escape sequence switches the console character set to a user-defined one, which can be modified by running the setfont program. Sending this escape sequence is necessary for people who use non-ISO 8859-1 screen fonts, but it does not affect native English speakers.

7.7.3. Contents of Sysvinit

Installed programs: bootlogd, fstab-decode, halt, init, killall5, poweroff (link to halt), reboot (link to halt), runlevel, shutdown, and telinit (link to init)

Short Descriptions


Logs boot messages to a log file


Runs a command with fstab-encoded arguments


Normally invokes shutdown with the -h option, except when already in run-level 0, then it tells the kernel to halt the system; it notes in the file /var/log/wtmp that the system is being brought down


The first process to be started when the kernel has initialized the hardware which takes over the boot process and starts all the proceses it is instructed to


Sends a signal to all processes, except the processes in its own session so it will not kill the shell running the script that called it


Tells the kernel to halt the system and switch off the computer (see halt)


Tells the kernel to reboot the system (see halt)


Reports the previous and the current run-level, as noted in the last run-level record in /run/utmp


Brings the system down in a secure way, signaling all processes and notifying all logged-in users


Tells init which run-level to change to