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6.56.
Sysvinit-2.88dsf
The Sysvinit package contains programs for controlling the startup,
running, and shutdown of the system.
Approximate build time:
less than 0.1 SBU
Required disk space:
1 MB
6.56.1. Installation of Sysvinit
When run-levels are changed (for example, when halting the system),
init sends
termination signals to those processes that init itself started and that
should not be running in the new run-level. While doing this,
init outputs messages
like “Sending processes the TERM
signal” which seem to imply that it is sending these
signals to all currently running processes. To avoid this
misinterpretation, modify the source so that these messages read
like “Sending processes configured via
/etc/inittab the TERM signal” instead:
sed -i 's@Sending processes@& configured via /etc/inittab@g' \
src/init.c
A maintained version of the wall program was installed
earlier by Util-linux-ng. Suppress the installation of Sysvinit's
version of this program and its man page:
sed -i -e 's/utmpdump wall/utmpdump/' \
-e 's/mountpoint.1 wall.1/mountpoint.1/' src/Makefile
Compile the package:
make -C src
This package does not come with a test suite.
Install the package:
make -C src install
6.56.2. Configuring
Sysvinit
Create a new file /etc/inittab by
running the following:
cat > /etc/inittab << "EOF"
# Begin /etc/inittab
id:3:initdefault:
si::sysinit:/etc/rc.d/init.d/rc sysinit
l0:0:wait:/etc/rc.d/init.d/rc 0
l1:S1:wait:/etc/rc.d/init.d/rc 1
l2:2:wait:/etc/rc.d/init.d/rc 2
l3:3:wait:/etc/rc.d/init.d/rc 3
l4:4:wait:/etc/rc.d/init.d/rc 4
l5:5:wait:/etc/rc.d/init.d/rc 5
l6:6:wait:/etc/rc.d/init.d/rc 6
ca:12345:ctrlaltdel:/sbin/shutdown -t1 -a -r now
su:S016:once:/sbin/sulogin
1:2345:respawn:/sbin/agetty tty1 9600
2:2345:respawn:/sbin/agetty tty2 9600
3:2345:respawn:/sbin/agetty tty3 9600
4:2345:respawn:/sbin/agetty tty4 9600
5:2345:respawn:/sbin/agetty tty5 9600
6:2345:respawn:/sbin/agetty tty6 9600
# End /etc/inittab
EOF
6.56.3.
Contents of Sysvinit
Installed programs:
bootlogd, fstab-decode, halt, init,
killall5, last, lastb (link to last), mesg, mountpoint, pidof
(link to killall5), poweroff (link to halt), reboot (link to
halt), runlevel, shutdown, sulogin, telinit (link to init), and
utmpdump
Short Descriptions
|
bootlogd
|
Logs boot messages to a log file
|
|
fstab-decode
|
Run a command with fstab-encoded arguments
|
|
halt
|
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
|
|
init
|
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
|
|
killall5
|
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
|
|
last
|
Shows which users last logged in (and out), searching
back through the /var/log/wtmp file; it also shows
system boots, shutdowns, and run-level changes
|
|
lastb
|
Shows the failed login attempts, as logged in
/var/log/btmp
|
|
mesg
|
Controls whether other users can send messages to the
current user's terminal
|
|
mountpoint
|
Checks if the directory is a mountpoint
|
|
pidof
|
Reports the PIDs of the given programs
|
|
poweroff
|
Tells the kernel to halt the system and switch off the
computer (see halt)
|
|
reboot
|
Tells the kernel to reboot the system (see halt)
|
|
runlevel
|
Reports the previous and the current run-level, as noted
in the last run-level record in /var/run/utmp
|
|
shutdown
|
Brings the system down in a secure way, signaling all
processes and notifying all logged-in users
|
|
sulogin
|
Allows root to log in; it
is normally invoked by init when the system
goes into single user mode
|
|
telinit
|
Tells init
which run-level to change to
|
|
utmpdump
|
Displays the content of the given login file in a more
user-friendly format
|
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