58

Chapter 3. Boot Process, Init, and Shutdown

Next, the

init

command sets the source function library,

/etc/rc.d/init.d/functions

, for the

system. This spells out how to start or kill a program and how to determine the PID of a program.

The

init

program starts all of the background processes by looking in the appropriate

rc

directory for

the runlevel specified as default in

/etc/inittab

. The

rc

directories are numbered to corresponds

to the runlevel they represent. For instance,

/etc/rc.d/rc5.d/

is the directory for runlevel five.

When booting to runlevel 5, the

init

program looks in the

/etc/rc.d/rc5.d/

directory to

determine which processes to start and stop. Below is an example listing for a runlevel 5,

/etc/rc.d/rc5.d/

directory:

K01pppoe  > ../init.d/pppoe

K05innd  > ../init.d/innd

K10ntpd  > ../init.d/ntpd

K15httpd  > ../init.d/httpd

K15mysqld  > ../init.d/mysqld

K15pvmd  > ../init.d/pvmd

K16rarpd  > ../init.d/rarpd

K20bootparamd  > ../init.d/bootparamd

K20nfs  > ../init.d/nfs

K20rstatd  > ../init.d/rstatd

K20rusersd  > ../init.d/rusersd

K20rwalld  > ../init.d/rwalld

K20rwhod  > ../init.d/rwhod

K25squid  > ../init.d/squid

K28amd  > ../init.d/amd

K30mcserv  > ../init.d/mcserv

K34yppasswdd  > ../init.d/yppasswdd

K35dhcpd  > ../init.d/dhcpd

K35smb  > ../init.d/smb

K35vncserver  > ../init.d/vncserver

K45arpwatch  > ../init.d/arpwatch

K45named  > ../init.d/named

K50snmpd  > ../init.d/snmpd

K54pxe  > ../init.d/pxe

K55routed  > ../init.d/routed

K60mars nwe  > ../init.d/mars nwe

K61ldap  > ../init.d/ldap

K65kadmin  > ../init.d/kadmin

K65kprop  > ../init.d/kprop

K65krb524  > ../init.d/krb524

K65krb5kdc  > ../init.d/krb5kdc

K75gated  > ../init.d/gated

K80nscd  > ../init.d/nscd

K84ypserv  > ../init.d/ypserv

K90ups  > ../init.d/ups

K96irda  > ../init.d/irda

S05kudzu  > ../init.d/kudzu

S06reconfig  > ../init.d/reconfig

S08ipchains  > ../init.d/ipchains

S10network  > ../init.d/network

S12syslog  > ../init.d/syslog

S13portmap  > ../init.d/portmap

S14nfslock  > ../init.d/nfslock

S18autofs  > ../init.d/autofs

S20random  > ../init.d/random

S25netfs  > ../init.d/netfs

S26apmd  > ../init.d/apmd

S35identd  > ../init.d/identd