Redhat enterprise Linux comes with two nice commands
ntsysv – simple TUI (text based interface) interface for configuring runlevels.
chkconfig – chkconfig provides a simple command-line tool for maintaining the /etc/rc[0-6].d directory hierarchy by relieving system administrators of the task of directly manipulating the numerous symbolic links in those directories.
Turn on sshd service on boot
Code:
chkconfig sshd on
Turn on MySQL service on boot
Code:
chkconfig mysqld on
Turn on Apache / httpd service on boot
Code:
chkconfig httpd on
Turn OFF Apache / httpd service on boot
Code:
chkconfig httpd off
List if service is on of off on boot
Use –list option which lists all of the services which chkconfig knows about, and whether they are stopped or started in each runlevel:
Code:
/sbin/chkconfig --list
Sample O/p of above command
Code:
ipmi 0:off 1:off 2:off 3:off 4:off 5:off 6:off
rawdevices 0:off 1:off 2:off 3:on 4:on 5:on 6:off
NetworkManager 0:off 1:off 2:off 3:off 4:off 5:off 6:off
rpcidmapd 0:off 1:off 2:off 3:off 4:on 5:on 6:off
ntpd 0:off 1:off 2:on 3:on 4:on 5:on 6:off
readahead 0:off 1:off 2:off 3:off 4:off 5:on 6:off
cpuspeed 0:off 1:on 2:on 3:off 4:on 5:on 6:off
gpm 0:off 1:off 2:on 3:off 4:on 5:on 6:off
autofs 0:off 1:off 2:off 3:off 4:on 5:on 6:off
cups 0:off 1:off 2:on 3:off 4:on 5:on 6:off
lm_sensors 0:off 1:off 2:on 3:on 4:on 5:on 6:off
messagebus 0:off 1:off 2:off 3:on 4:on 5:on 6:off
network 0:off 1:off 2:on 3:on 4:on 5:on 6:off
xfs 0:off 1:off 2:on 3:off 4:on 5:on 6:off
saslauthd 0:off 1:off 2:off 3:on 4:on 5:on 6:off
apf 0:off 1:off 2:on 3:on 4:on 5:on 6:off
nscd 0:off 1:off 2:off 3:off 4:off 5:off 6:off
rhnsd 0:off 1:off 2:on 3:on 4:on 5:on 6:off
snmptrapd 0:off 1:off 2:off 3:off 4:off 5:off 6:off
xinetd 0:off 1:off 2:off 3:on 4:on 5:on 6:off
syslog 0:off 1:off 2:on 3:on 4:on 5:on 6:off
netplugd 0:off 1:off 2:off 3:off 4:off 5:off 6:off
portmap 0:off 1:off 2:off 3:off 4:on 5:on 6:off
isdn 0:off 1:off 2:on 3:off 4:on 5:on 6:off
microcode_ctl 0:off 1:off 2:on 3:on 4:on 5:on 6:off
ypbind 0:off 1:off 2:off 3:off 4:off 5:off 6:off
kudzu 0:off 1:off 2:off 3:on 4:on 5:on 6:off
iptables 0:off 1:off 2:off 3:off 4:off 5:off 6:off
postfix 0:off 1:off 2:on 3:on 4:on 5:on 6:off
bluetooth 0:off 1:off 2:off 3:off 4:off 5:off 6:off
sysstat 0:off 1:on 2:on 3:on 4:on 5:on 6:off
diskdump 0:off 1:off 2:off 3:off 4:off 5:off 6:off
winbind 0:off 1:off 2:off 3:off 4:off 5:off 6:off
dovecot 0:off 1:off 2:on 3:on 4:on 5:on 6:off
named 0:off 1:off 2:off 3:off 4:off 5:off 6:off
nfs 0:off 1:off 2:off 3:off 4:off 5:off 6:off
mysqld 0:off 1:off 2:off 3:on 4:off 5:off 6:off
sshd 0:off 1:off 2:on 3:on 4:on 5:on 6:off
auditd 0:off 1:off 2:off 3:off 4:off 5:off 6:off
vsftpd 0:off 1:off 2:off 3:off 4:off 5:off 6:off
openibd 0:off 1:off 2:on 3:off 4:on 5:on 6:off
irda 0:off 1:off 2:off 3:off 4:off 5:off 6:off
monit 0:off 1:off 2:on 3:on 4:on 5:on 6:off
dc_client 0:off 1:off 2:off 3:off 4:off 5:off 6:off
readahead_early 0:off 1:off 2:off 3:off 4:off 5:on 6:off
netfs 0:off 1:off 2:off 3:on 4:on 5:on 6:off
squid 0:off 1:off 2:off 3:off 4:off 5:off 6:off
vmware 0:off 1:off 2:on 3:on 4:off 5:on 6:off
haldaemon 0:off 1:off 2:off 3:on 4:on 5:on 6:off
httpd 0:off 1:off 2:off 3:off 4:off 5:off 6:off
netdump 0:off 1:off 2:off 3:off 4:off 5:off 6:off
irqbalance 0:off 1:off 2:off 3:on 4:on 5:on 6:off
smartd 0:off 1:off 2:on 3:on 4:on 5:on 6:off
snmpd 0:off 1:off 2:on 3:on 4:on 5:on 6:off
anacron 0:off 1:off 2:on 3:on 4:on 5:on 6:off
arptables_jf 0:off 1:off 2:on 3:on 4:on 5:on 6:off
nfslock 0:off 1:off 2:off 3:off 4:on 5:on 6:off
dc_server 0:off 1:off 2:off 3:off 4:off 5:off 6:off
crond 0:off 1:off 2:on 3:on 4:on 5:on 6:off
psacct 0:off 1:off 2:on 3:on 4:on 5:on 6:off
mdmpd 0:off 1:off 2:off 3:off 4:off 5:off 6:off
tux 0:off 1:off 2:off 3:off 4:off 5:off 6:off
atd 0:off 1:off 2:off 3:on 4:on 5:on 6:off
acpid 0:off 1:off 2:off 3:on 4:on 5:on 6:off
spamassassin 0:off 1:off 2:on 3:on 4:on 5:on 6:off
pcmcia 0:off 1:off 2:on 3:off 4:on 5:on 6:off
rpcgssd 0:off 1:off 2:off 3:off 4:on 5:on 6:off
mdmonitor 0:off 1:off 2:on 3:on 4:on 5:on 6:off
xinetd based services:
cups-lpd: off
finger: off
eklogin: off
klogin: off
chargen: off
daytime-udp: off
krb5-telnet: off
time-udp: off
daytime: off
time: off
gssftp: off
kshell: off
echo-udp: off
rsync: off
tftp: off
vmware-authd: on
chargen-udp: off
echo: off
Type ntsysv for GUI tool
Code:
ntsysv
Type serviceconf – GUI tools need X GUI system 
Code:
serviceconf