????Linux???к?????????????????????????????????????????????????????????????????磬????滮????crond?????????lqd???

??????????????????????

?????? Kudzu????????

?????? sshd??????????

?????? inetd???????????

?????? ldap????????Э?飩

????Linux???е???????

???????????3??5??

?????? run level 0????????????????????????????????

?????? run level 1??????Single user mode?????????root???????????????Щ????????????

?????? run level 2??????????е???????????????????NFS working???????????繦??

?????? run level 3??????????????????????????????????????run level 2??е?? ?????????????????????

?????? run level 4?????????????壬???????????o?run level 3????????

?????? run level 5????run level 3????????????????????????ν??棬

?????? run level 6?????????????????????

????Chkconfig?????????????е????

???????MAN Chkconfig ?????????????????????÷?????

????????????

?????? Netstat???????

?????? Netstat -tn ???????????

?????? Netstat -tnl ????????????

?????? Lsof???netstat????????????????????????

?????? Lsof -i ??111 ??111???????????PID???COMMAND

?????? kill 9441 ???PID?9441????

????Ntsysv??λ???????????????????

????????????Daemon???????????????????????????????????????????????????????????????????Щ?????????????????????????????????Linux???????????????????????????????磬Internet??????inetd??Web??????httpd?????????????????????????????磬????滮????crond?????????lpd???

???????????????????????????????????汾??Unix?????????????????????Unix?????????????????????????????????????????Щ?????????????BSD4.3???汾??System V????Linux?????????????潫??????Linux???????????????????????????