笔记
#运行级别脚本介绍 #准备工作 #进入目录 cd /home/wgb/shell #建立文件夹 mkdir 0421 #进入目录 cd 0421 #运行级别 #运行级别目录 #进入etc目录 [root@localhost etc]# cd /etc #ls rc后按tab键,显示rc开头的文件或者目录 [root@localhost etc]# ls rc rc rc.news rc1.d rc4.d rc.d rc.sysinit rc2.d rc5.d rc.local rc0.d rc3.d rc6.d #获得当前运行级别 [root@localhost etc]# runlevel N 5 #进入目录 [root@localhost etc]# cd rc5.d #显示内容 [root@localhost rc5.d]# ls K05innd K50snmpd S09isdn K05saslauthd K50snmptrapd S10network K09privoxy K50tux S12syslog K10psacct K50vsftpd S13irqbalance K12mailman K54pxe S13portmap K15httpd K55routed S14nfslock K15postgresql K61ldap S17keytable K16rarpd K65identd S20random K20bootparamd K65kadmin S24pcmcia K20iscsi K65kprop S25netfs K20netdump-server K65krb524 S26apmd K20nfs K65krb5kdc S28autofs K20rstatd K70aep1000 S55sshd K20rusersd K70bcm5820 S56rawdevices K20rwalld K74ntpd S56xinetd K20rwhod K74ups S59hpoj K24irda K74ypserv S80sendmail K25squid K74ypxfrd S80spamassassin K28amd K84bgpd S85gpm K34dhcrelay K84ospf6d S90FreeWnn K34yppasswdd K84ospfd S90canna K35atalk K84ripd S90crond K35dhcpd K84ripngd S90cups K35vncserver K85zebra S90xfs K35winbind K90isicom S91smb K36lisa K95firstboot S95anacron K40mars-nwe S00microcode_ctl S95atd K45arpwatch S03vmware-tools S95jexec K45named S05kudzu S97rhnsd K45smartd S08ip6tables S99local K46radvd S08ipchains S99mdmonitor K50netdump S08iptables #S和K表示当前级别下的脚本 S:被启动 K:被终止 #列出详细信息,指向init.d目录下的对应文件 [root@localhost rc5.d]# ls -al total 8 drwxr-xr-x 2 root root 4096 Nov 26 09:42 . drwxr-xr-x 10 root root 4096 Nov 24 10:38 .. lrwxrwxrwx 1 root root 14 Sep 21 2011 K05innd -> ../init.d/innd lrwxrwxrwx 1 root root 19 Sep 21 2011 K05saslauthd -> ../init.d/saslauthd lrwxrwxrwx 1 root root 17 Sep 21 2011 K09privoxy -> ../init.d/privoxy lrwxrwxrwx 1 root root 16 Sep 21 2011 K10psacct -> ../init.d/psacct lrwxrwxrwx 1 root root 17 Sep 21 2011 K12mailman -> ../init.d/mailman lrwxrwxrwx 1 root root 15 Sep 21 2011 K15httpd -> ../init.d/httpd lrwxrwxrwx 1 root root 20 Sep 21 2011 K15postgresql -> ../init.d/postgresql lrwxrwxrwx 1 root root 15 Sep 21 2011 K16rarpd -> ../init.d/rarpd lrwxrwxrwx 1 root root 20 Sep 21 2011 K20bootparamd -> ../init.d/bootparamd lrwxrwxrwx 1 root root 15 Sep 21 2011 K20iscsi -> ../init.d/iscsi lrwxrwxrwx 1 root root 24 Sep 21 2011 K20netdump-server -> ../init.d/netdump-server lrwxrwxrwx 1 root root 13 Sep 21 2011 K20nfs -> ../init.d/nfs lrwxrwxrwx 1 root root 16 Sep 21 2011 K20rstatd -> ../init.d/rstatd lrwxrwxrwx 1 root root 17 Sep 21 2011 K20rusersd -> ../init.d/rusersd lrwxrwxrwx 1 root root 16 Sep 21 2011 K20rwalld -> ../init.d/rwalld lrwxrwxrwx 1 root root 15 Sep 21 2011 K20rwhod -> ../init.d/rwhod lrwxrwxrwx 1 root root 14 Sep 21 2011 K24irda -> ../init.d/irda lrwxrwxrwx 1 root root 15 Sep 21 2011 K25squid -> ../init.d/squid lrwxrwxrwx 1 root root 13 Sep 21 2011 K28amd -> ../init.d/amd lrwxrwxrwx 1 root root 18 Sep 21 2011 K34dhcrelay -> ../init.d/dhcrelay lrwxrwxrwx 1 root root 19 Sep 21 2011 K34yppasswdd -> ../init.d/yppasswdd lrwxrwxrwx 1 root root 15 Sep 21 2011 K35atalk -> ../init.d/atalk lrwxrwxrwx 1 root root 15 Sep 21 2011 K35dhcpd -> ../init.d/dhcpd lrwxrwxrwx 1 root root 19 Sep 21 2011 K35vncserver -> ../init.d/vncserver lrwxrwxrwx 1 root root 17 Sep 21 2011 K35winbind -> ../init.d/winbind lrwxrwxrwx 1 root root 14 Sep 21 2011 K36lisa -> ../init.d/lisa lrwxrwxrwx 1 root root 18 Sep 21 2011 K40mars-nwe -> ../init.d/mars-nwe lrwxrwxrwx 1 root root 18 Sep 21 2011 K45arpwatch -> ../init.d/arpwatch lrwxrwxrwx 1 root root 15 Sep 21 2011 K45named -> ../init.d/named lrwxrwxrwx 1 root root 16 Sep 21 2011 K45smartd -> ../init.d/smartd lrwxrwxrwx 1 root root 15 Sep 21 2011 K46radvd -> ../init.d/radvd lrwxrwxrwx 1 root root 17 Sep 21 2011 K50netdump -> ../init.d/netdump lrwxrwxrwx 1 root root 15 Sep 21 2011 K50snmpd -> ../init.d/snmpd lrwxrwxrwx 1 root root 19 Sep 21 2011 K50snmptrapd -> ../init.d/snmptrapd lrwxrwxrwx 1 root root 13 Sep 21 2011 K50tux -> ../init.d/tux lrwxrwxrwx 1 root root 16 Sep 21 2011 K50vsftpd -> ../init.d/vsftpd lrwxrwxrwx 1 root root 13 Sep 21 2011 K54pxe -> ../init.d/pxe lrwxrwxrwx 1 root root 16 Sep 21 2011 K55routed -> ../init.d/routed lrwxrwxrwx 1 root root 14 Sep 21 2011 K61ldap -> ../init.d/ldap lrwxrwxrwx 1 root root 16 Sep 21 2011 K65identd -> ../init.d/identd lrwxrwxrwx 1 root root 16 Sep 21 2011 K65kadmin -> ../init.d/kadmin lrwxrwxrwx 1 root root 15 Sep 21 2011 K65kprop -> ../init.d/kprop lrwxrwxrwx 1 root root 16 Sep 21 2011 K65krb524 -> ../init.d/krb524 lrwxrwxrwx 1 root root 17 Sep 21 2011 K65krb5kdc -> ../init.d/krb5kdc lrwxrwxrwx 1 root root 17 Sep 21 2011 K70aep1000 -> ../init.d/aep1000 lrwxrwxrwx 1 root root 17 Sep 21 2011 K70bcm5820 -> ../init.d/bcm5820 lrwxrwxrwx 1 root root 14 Sep 21 2011 K74ntpd -> ../init.d/ntpd lrwxrwxrwx 1 root root 13 Sep 21 2011 K74ups -> ../init.d/ups lrwxrwxrwx 1 root root 16 Sep 21 2011 K74ypserv -> ../init.d/ypserv lrwxrwxrwx 1 root root 16 Sep 21 2011 K74ypxfrd -> ../init.d/ypxfrd lrwxrwxrwx 1 root root 14 Sep 21 2011 K84bgpd -> ../init.d/bgpd lrwxrwxrwx 1 root root 16 Sep 21 2011 K84ospf6d -> ../init.d/ospf6d lrwxrwxrwx 1 root root 15 Sep 21 2011 K84ospfd -> ../init.d/ospfd lrwxrwxrwx 1 root root 14 Sep 21 2011 K84ripd -> ../init.d/ripd lrwxrwxrwx 1 root root 16 Sep 21 2011 K84ripngd -> ../init.d/ripngd lrwxrwxrwx 1 root root 15 Sep 21 2011 K85zebra -> ../init.d/zebra lrwxrwxrwx 1 root root 16 Sep 21 2011 K90isicom -> ../init.d/isicom lrwxrwxrwx 1 root root 19 Sep 21 2011 K95firstboot -> ../init.d/firstboot lrwxrwxrwx 1 root root 23 Sep 21 2011 S00microcode_ctl -> ../init.d/microcode_ctl lrwxrwxrwx 1 root root 22 Oct 19 2012 S03vmware-tools -> ../init.d/vmware-tools lrwxrwxrwx 1 root root 15 Sep 21 2011 S05kudzu -> ../init.d/kudzu lrwxrwxrwx 1 root root 19 Sep 21 2011 S08ip6tables -> ../init.d/ip6tables lrwxrwxrwx 1 root root 18 Sep 21 2011 S08ipchains -> ../init.d/ipchains lrwxrwxrwx 1 root root 18 Sep 21 2011 S08iptables -> ../init.d/iptables lrwxrwxrwx 1 root root 14 Sep 21 2011 S09isdn -> ../init.d/isdn lrwxrwxrwx 1 root root 17 Sep 21 2011 S10network -> ../init.d/network lrwxrwxrwx 1 root root 16 Sep 21 2011 S12syslog -> ../init.d/syslog lrwxrwxrwx 1 root root 20 Sep 21 2011 S13irqbalance -> ../init.d/irqbalance lrwxrwxrwx 1 root root 17 Sep 21 2011 S13portmap -> ../init.d/portmap lrwxrwxrwx 1 root root 17 Sep 21 2011 S14nfslock -> ../init.d/nfslock lrwxrwxrwx 1 root root 18 Sep 21 2011 S17keytable -> ../init.d/keytable lrwxrwxrwx 1 root root 16 Sep 21 2011 S20random -> ../init.d/random lrwxrwxrwx 1 root root 16 Sep 21 2011 S24pcmcia -> ../init.d/pcmcia lrwxrwxrwx 1 root root 15 Sep 21 2011 S25netfs -> ../init.d/netfs lrwxrwxrwx 1 root root 14 Sep 21 2011 S26apmd -> ../init.d/apmd lrwxrwxrwx 1 root root 16 Sep 21 2011 S28autofs -> ../init.d/autofs lrwxrwxrwx 1 root root 14 Sep 21 2011 S55sshd -> ../init.d/sshd lrwxrwxrwx 1 root root 20 Sep 21 2011 S56rawdevices -> ../init.d/rawdevices lrwxrwxrwx 1 root root 16 Sep 21 2011 S56xinetd -> ../init.d/xinetd lrwxrwxrwx 1 root root 14 Sep 21 2011 S59hpoj -> ../init.d/hpoj lrwxrwxrwx 1 root root 18 Sep 21 2011 S80sendmail -> ../init.d/sendmail lrwxrwxrwx 1 root root 22 Sep 21 2011 S80spamassassin -> ../init.d/spamassassin lrwxrwxrwx 1 root root 13 Sep 21 2011 S85gpm -> ../init.d/gpm lrwxrwxrwx 1 root root 17 Sep 21 2011 S90FreeWnn -> ../init.d/FreeWnn lrwxrwxrwx 1 root root 15 Sep 21 2011 S90canna -> ../init.d/canna lrwxrwxrwx 1 root root 15 Sep 21 2011 S90crond -> ../init.d/crond lrwxrwxrwx 1 root root 14 Sep 21 2011 S90cups -> ../init.d/cups lrwxrwxrwx 1 root root 13 Sep 21 2011 S90xfs -> ../init.d/xfs lrwxrwxrwx 1 root root 13 Sep 21 2011 S91smb -> ../init.d/smb lrwxrwxrwx 1 root root 17 Sep 21 2011 S95anacron -> ../init.d/anacron lrwxrwxrwx 1 root root 13 Sep 21 2011 S95atd -> ../init.d/atd lrwxrwxrwx 1 root root 15 Nov 19 20:42 S95jexec -> ../init.d/jexec lrwxrwxrwx 1 root root 15 Sep 21 2011 S97rhnsd -> ../init.d/rhnsd lrwxrwxrwx 1 root root 11 Sep 8 2007 S99local -> ../rc.local lrwxrwxrwx 1 root root 19 Sep 21 2011 S99mdmonitor -> ../init.d/mdmonitor #进入rc3.d目录 [root@localhost rc5.d]# cd ../rc3.d #列出详细信息 [root@localhost rc3.d]# ls -al total 8 drwxr-xr-x 2 root root 4096 Nov 26 09:42 . drwxr-xr-x 10 root root 4096 Nov 24 10:38 .. lrwxrwxrwx 1 root root 14 Sep 8 2007 K05innd -> ../init.d/innd lrwxrwxrwx 1 root root 19 Sep 8 2007 K05saslauthd -> ../init.d/saslauthd lrwxrwxrwx 1 root root 17 Sep 8 2007 K09privoxy -> ../init.d/privoxy lrwxrwxrwx 1 root root 16 Sep 8 2007 K10psacct -> ../init.d/psacct lrwxrwxrwx 1 root root 17 Sep 8 2007 K12mailman -> ../init.d/mailman lrwxrwxrwx 1 root root 15 Sep 8 2007 K15httpd -> ../init.d/httpd lrwxrwxrwx 1 root root 20 Sep 8 2007 K15postgresql -> ../init.d/postgresql lrwxrwxrwx 1 root root 15 Sep 8 2007 K16rarpd -> ../init.d/rarpd lrwxrwxrwx 1 root root 20 Sep 8 2007 K20bootparamd -> ../init.d/bootparamd lrwxrwxrwx 1 root root 15 Sep 8 2007 K20iscsi -> ../init.d/iscsi lrwxrwxrwx 1 root root 24 Sep 8 2007 K20netdump-server -> ../init.d/netdump-server lrwxrwxrwx 1 root root 13 Sep 8 2007 K20nfs -> ../init.d/nfs lrwxrwxrwx 1 root root 16 Sep 8 2007 K20rstatd -> ../init.d/rstatd lrwxrwxrwx 1 root root 17 Sep 8 2007 K20rusersd -> ../init.d/rusersd lrwxrwxrwx 1 root root 16 Sep 8 2007 K20rwalld -> ../init.d/rwalld lrwxrwxrwx 1 root root 15 Sep 8 2007 K20rwhod -> ../init.d/rwhod lrwxrwxrwx 1 root root 14 Sep 8 2007 K24irda -> ../init.d/irda lrwxrwxrwx 1 root root 15 Sep 8 2007 K25squid -> ../init.d/squid lrwxrwxrwx 1 root root 13 Sep 8 2007 K28amd -> ../init.d/amd lrwxrwxrwx 1 root root 18 Sep 8 2007 K34dhcrelay -> ../init.d/dhcrelay lrwxrwxrwx 1 root root 19 Sep 8 2007 K34yppasswdd -> ../init.d/yppasswdd lrwxrwxrwx 1 root root 15 Sep 8 2007 K35atalk -> ../init.d/atalk lrwxrwxrwx 1 root root 15 Sep 8 2007 K35dhcpd -> ../init.d/dhcpd lrwxrwxrwx 1 root root 13 Sep 8 2007 K35smb -> ../init.d/smb lrwxrwxrwx 1 root root 19 Sep 8 2007 K35vncserver -> ../init.d/vncserver lrwxrwxrwx 1 root root 17 Sep 8 2007 K35winbind -> ../init.d/winbind lrwxrwxrwx 1 root root 14 Sep 8 2007 K36lisa -> ../init.d/lisa lrwxrwxrwx 1 root root 18 Sep 8 2007 K40mars-nwe -> ../init.d/mars-nwe lrwxrwxrwx 1 root root 18 Sep 8 2007 K45arpwatch -> ../init.d/arpwatch lrwxrwxrwx 1 root root 15 Sep 8 2007 K45named -> ../init.d/named lrwxrwxrwx 1 root root 16 Sep 8 2007 K45smartd -> ../init.d/smartd lrwxrwxrwx 1 root root 15 Sep 8 2007 K46radvd -> ../init.d/radvd lrwxrwxrwx 1 root root 17 Sep 8 2007 K50netdump -> ../init.d/netdump lrwxrwxrwx 1 root root 15 Sep 8 2007 K50snmpd -> ../init.d/snmpd lrwxrwxrwx 1 root root 19 Sep 8 2007 K50snmptrapd -> ../init.d/snmptrapd lrwxrwxrwx 1 root root 13 Sep 8 2007 K50tux -> ../init.d/tux lrwxrwxrwx 1 root root 16 Sep 8 2007 K50vsftpd -> ../init.d/vsftpd lrwxrwxrwx 1 root root 13 Sep 8 2007 K54pxe -> ../init.d/pxe lrwxrwxrwx 1 root root 16 Sep 8 2007 K55routed -> ../init.d/routed lrwxrwxrwx 1 root root 14 Sep 8 2007 K61ldap -> ../init.d/ldap lrwxrwxrwx 1 root root 16 Sep 8 2007 K65identd -> ../init.d/identd lrwxrwxrwx 1 root root 16 Sep 8 2007 K65kadmin -> ../init.d/kadmin lrwxrwxrwx 1 root root 15 Sep 8 2007 K65kprop -> ../init.d/kprop lrwxrwxrwx 1 root root 16 Sep 8 2007 K65krb524 -> ../init.d/krb524 lrwxrwxrwx 1 root root 17 Sep 8 2007 K65krb5kdc -> ../init.d/krb5kdc lrwxrwxrwx 1 root root 17 Sep 8 2007 K70aep1000 -> ../init.d/aep1000 lrwxrwxrwx 1 root root 17 Sep 8 2007 K70bcm5820 -> ../init.d/bcm5820 lrwxrwxrwx 1 root root 14 Sep 7 2007 K74ntpd -> ../init.d/ntpd lrwxrwxrwx 1 root root 13 Sep 8 2007 K74ups -> ../init.d/ups lrwxrwxrwx 1 root root 16 Sep 8 2007 K74ypserv -> ../init.d/ypserv lrwxrwxrwx 1 root root 16 Sep 8 2007 K74ypxfrd -> ../init.d/ypxfrd lrwxrwxrwx 1 root root 14 Sep 8 2007 K84bgpd -> ../init.d/bgpd lrwxrwxrwx 1 root root 16 Sep 8 2007 K84ospf6d -> ../init.d/ospf6d lrwxrwxrwx 1 root root 15 Sep 8 2007 K84ospfd -> ../init.d/ospfd lrwxrwxrwx 1 root root 14 Sep 8 2007 K84ripd -> ../init.d/ripd lrwxrwxrwx 1 root root 16 Sep 8 2007 K84ripngd -> ../init.d/ripngd lrwxrwxrwx 1 root root 15 Sep 8 2007 K85zebra -> ../init.d/zebra lrwxrwxrwx 1 root root 16 Sep 8 2007 K90isicom -> ../init.d/isicom lrwxrwxrwx 1 root root 19 Sep 7 2007 K95firstboot -> ../init.d/firstboot lrwxrwxrwx 1 root root 23 Sep 8 2007 S00microcode_ctl -> ../init.d/microcode_ctl lrwxrwxrwx 1 root root 22 Oct 19 2012 S03vmware-tools -> ../init.d/vmware-tools lrwxrwxrwx 1 root root 15 Sep 8 2007 S05kudzu -> ../init.d/kudzu lrwxrwxrwx 1 root root 19 Sep 8 2007 S08ip6tables -> ../init.d/ip6tables lrwxrwxrwx 1 root root 18 Sep 8 2007 S08ipchains -> ../init.d/ipchains lrwxrwxrwx 1 root root 18 Sep 8 2007 S08iptables -> ../init.d/iptables lrwxrwxrwx 1 root root 14 Sep 8 2007 S09isdn -> ../init.d/isdn lrwxrwxrwx 1 root root 17 Sep 8 2007 S10network -> ../init.d/network lrwxrwxrwx 1 root root 16 Sep 8 2007 S12syslog -> ../init.d/syslog lrwxrwxrwx 1 root root 20 Sep 8 2007 S13irqbalance -> ../init.d/irqbalance lrwxrwxrwx 1 root root 17 Sep 8 2007 S13portmap -> ../init.d/portmap lrwxrwxrwx 1 root root 17 Sep 8 2007 S14nfslock -> ../init.d/nfslock lrwxrwxrwx 1 root root 18 Sep 8 2007 S17keytable -> ../init.d/keytable lrwxrwxrwx 1 root root 16 Sep 8 2007 S20random -> ../init.d/random lrwxrwxrwx 1 root root 16 Sep 8 2007 S24pcmcia -> ../init.d/pcmcia lrwxrwxrwx 1 root root 15 Sep 8 2007 S25netfs -> ../init.d/netfs lrwxrwxrwx 1 root root 14 Sep 8 2007 S26apmd -> ../init.d/apmd lrwxrwxrwx 1 root root 16 Sep 8 2007 S28autofs -> ../init.d/autofs lrwxrwxrwx 1 root root 14 Sep 8 2007 S55sshd -> ../init.d/sshd lrwxrwxrwx 1 root root 20 Sep 8 2007 S56rawdevices -> ../init.d/rawdevices lrwxrwxrwx 1 root root 16 Sep 8 2007 S56xinetd -> ../init.d/xinetd lrwxrwxrwx 1 root root 14 Sep 8 2007 S59hpoj -> ../init.d/hpoj lrwxrwxrwx 1 root root 18 Sep 8 2007 S80sendmail -> ../init.d/sendmail lrwxrwxrwx 1 root root 22 Sep 8 2007 S80spamassassin -> ../init.d/spamassassin lrwxrwxrwx 1 root root 13 Sep 8 2007 S85gpm -> ../init.d/gpm lrwxrwxrwx 1 root root 17 Sep 8 2007 S90FreeWnn -> ../init.d/FreeWnn lrwxrwxrwx 1 root root 15 Sep 8 2007 S90canna -> ../init.d/canna lrwxrwxrwx 1 root root 15 Sep 8 2007 S90crond -> ../init.d/crond lrwxrwxrwx 1 root root 14 Sep 8 2007 S90cups -> ../init.d/cups lrwxrwxrwx 1 root root 13 Sep 8 2007 S90xfs -> ../init.d/xfs lrwxrwxrwx 1 root root 17 Sep 8 2007 S95anacron -> ../init.d/anacron lrwxrwxrwx 1 root root 13 Sep 8 2007 S95atd -> ../init.d/atd lrwxrwxrwx 1 root root 15 Nov 19 20:42 S95jexec -> ../init.d/jexec lrwxrwxrwx 1 root root 15 Sep 8 2007 S97rhnsd -> ../init.d/rhnsd lrwxrwxrwx 1 root root 11 Sep 8 2007 S99local -> ../rc.local lrwxrwxrwx 1 root root 19 Sep 8 2007 S99mdmonitor -> ../init.d/mdmonitor #阿拉伯数字小先启动,大后启动 # inittab #查看inittab文件内容 [root@localhost etc]# cat inittab # # inittab This file describes how the INIT process should set up # the system in a certain run-level. # # Author: Miquel van Smoorenburg, <miquels@drinkel.nl.mugnet.org> # Modified for RHS Linux by Marc Ewing and Donnie Barnes # # Default runlevel. The runlevels used by RHS are: # 0 - halt (Do NOT set initdefault to this) # 1 - Single user mode # 2 - Multiuser, without NFS (The same as 3, if you do not have networking) # 3 - Full multiuser mode # 4 - unused # 5 - X11 # 6 - reboot (Do NOT set initdefault to this) # id:5:initdefault: # System initialization. si::sysinit:/etc/rc.d/rc.sysinit l0:0:wait:/etc/rc.d/rc 0 l1:1:wait:/etc/rc.d/rc 1 l2:2:wait:/etc/rc.d/rc 2 l3:3:wait:/etc/rc.d/rc 3 l4:4:wait:/etc/rc.d/rc 4 l5:5:wait:/etc/rc.d/rc 5 l6:6:wait:/etc/rc.d/rc 6 # Trap CTRL-ALT-DELETE ca::ctrlaltdel:/sbin/shutdown -t3 -r now # When our UPS tells us power has failed, assume we have a few minutes # of power left. Schedule a shutdown for 2 minutes from now. # This does, of course, assume you have powerd installed and your # UPS connected and working correctly. pf::powerfail:/sbin/shutdown -f -h +2 "Power Failure; System Shutting Down" # If power was restored before the shutdown kicked in, cancel it. pr:12345:powerokwait:/sbin/shutdown -c "Power Restored; Shutdown Cancelled" # Run gettys in standard runlevels 1:2345:respawn:/sbin/mingetty tty1 2:2345:respawn:/sbin/mingetty tty2 3:2345:respawn:/sbin/mingetty tty3 4:2345:respawn:/sbin/mingetty tty4 5:2345:respawn:/sbin/mingetty tty5 6:2345:respawn:/sbin/mingetty tty6 # Run xdm in runlevel 5 x:5:respawn:/etc/X11/prefdm –nodaemon #作为服务器:默认为3 #学会查看帮助信息 #再次查看inittab文件 [root@localhost etc]# cat inittab # # inittab This file describes how the INIT process should set up # the system in a certain run-level. # # Author: Miquel van Smoorenburg, <miquels@drinkel.nl.mugnet.org> # Modified for RHS Linux by Marc Ewing and Donnie Barnes # # Default runlevel. The runlevels used by RHS are: # 0 - halt (Do NOT set initdefault to this) # 1 - Single user mode # 2 - Multiuser, without NFS (The same as 3, if you do not have networking) # 3 - Full multiuser mode # 4 - unused # 5 - X11 # 6 - reboot (Do NOT set initdefault to this) # id:5:initdefault: # System initialization. si::sysinit:/etc/rc.d/rc.sysinit l0:0:wait:/etc/rc.d/rc 0 l1:1:wait:/etc/rc.d/rc 1 l2:2:wait:/etc/rc.d/rc 2 l3:3:wait:/etc/rc.d/rc 3 l4:4:wait:/etc/rc.d/rc 4 l5:5:wait:/etc/rc.d/rc 5 l6:6:wait:/etc/rc.d/rc 6 # Things to run in every runlevel ud:once:/sbin/update #更改的内容 #checkdisk::once:/sbin/checkdisk.sh > /dev/console 2>&1 # Trap CTRL-ALT-DELETE ca::ctrlaltdel:/sbin/shutdown -t3 -r now # When our UPS tells us power has failed, assume we have a few minutes # of power left. Schedule a shutdown for 2 minutes from now. # This does, of course, assume you have powerd installed and your # UPS connected and working correctly. pf::powerfail:/sbin/shutdown -f -h +2 "Power Failure; System Shutting Down" # If power was restored before the shutdown kicked in, cancel it. pr:12345:powerokwait:/sbin/shutdown -c "Power Restored; Shutdown Cancelled" # Run gettys in standard runlevels 1:2345:respawn:/sbin/mingetty tty1 2:2345:respawn:/sbin/mingetty tty2 3:2345:respawn:/sbin/mingetty tty3 4:2345:respawn:/sbin/mingetty tty4 5:2345:respawn:/sbin/mingetty tty5 6:2345:respawn:/sbin/mingetty tty6 # Run xdm in runlevel 5 x:5:respawn:/etc/X11/prefdm -nodaemon #启动应用程序 #启动脚本分析 #编辑文件 [root@localhost rc3.d]# vi S90crond #查看文件内容 [root@localhost rc3.d]# cat S90crond #! /bin/bash # # crond Start/Stop the cron clock daemon. # # chkconfig: 2345 90 60 # description: cron is a standard UNIX program that runs user-specified \ # programs at periodic scheduled times. vixie cron adds a \ # number of features to the basic UNIX cron, including better \ # security and more powerful configuration options. # processname: crond # config: /etc/crontab # pidfile: /var/run/crond.pid # Source function library. . /etc/init.d/functions RETVAL=0 # See how we were called. prog="crond" start() { echo -n $"Starting $prog: " daemon crond RETVAL=$? echo [ $RETVAL -eq 0 ] && touch /var/lock/subsys/crond return $RETVAL } stop() { echo -n $"Stopping $prog: " killproc crond RETVAL=$? echo [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/crond return $RETVAL } rhstatus() { status crond } restart() { stop start } reload() { echo -n $"Reloading cron daemon configuration: " killproc crond -HUP retval=$? echo return $RETVAL } case "$1" in start) start ;; stop) stop ;; restart) restart ;; reload) reload ;; status) rhstatus ;; condrestart) [ -f /var/lock/subsys/crond ] && restart || : ;; *) echo $"Usage: $0 {start|stop|status|reload|restart|condrestart}" exit 1 esac exit $? #启动脚本 service server start|stop|restart|… srcipt_name start|stop|restart #停止crond服务 [root@localhost rc3.d]# service crond stop Stopping crond: [ OK ] #启动crond服务 [root@localhost rc3.d]# service crond start Starting crond: ^[[A [ OK ] #重启crond服务 [root@localhost rc3.d]# service crond restart Stopping crond: [ OK ] Starting crond: [ OK ] #查看crond服务状态 [root@localhost rc3.d]# service crond status crond (pid 3737) is running... #进入inti.d目录 [root@localhost rc3.d]# cd ../init.d/ #列出所有内容 [root@localhost init.d]# ls FreeWnn gpm krb5kdc portmap smartd aep1000 halt kudzu postfix smb amd hpoj ldap postgresql snmpd anacron httpd lisa privoxy snmptrapd apmd identd lpd psacct spamassassin arpwatch innd mailman pxe squid atalk ip6tables mars-nwe radvd sshd atd ipchains mdmonitor random syslog autofs iptables microcode_ctl rarpd tux bcm5820 irda named rawdevices ups bgpd irqbalance netdump rhnsd vmware-tools bluetooth iscsi netdump-server ripd vncserver bootparamd isdn netfs ripngd vsftpd canna isicom network routed winbind cpqarrayd jexec nfs rstatd xfs crond kadmin nfslock rusersd xinetd cups kdcrotate nscd rwalld ypbind dhcpd keytable ntpd rwhod yppasswdd dhcrelay killall ospf6d saslauthd ypserv firstboot kprop ospfd sendmail ypxfrd functions krb524 pcmcia single zebra [root@localhost init.d]# vi mysqld #编写自己的服务,然后放在init.d目录下,再在对应的启动级别下加入超链接即可实现当机器启动时完成对相应服务的启动
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