这些服务平时都用不到，不禁用肯定会占用大量服务器资源，赶紧禁用了吧！
chkconfig yum-updatesd off chkconfig atd off chkconfig autofs off chkconfig avahi-daemon off chkconfig bluetooth off chkconfig cups off chkconfig firstboot off chkconfig gpm off chkconfig hidd off chkconfig ip6tables off chkconfig isdn off chkconfig kudzu off chkconfig netfs off chkconfig nfslock off chkconfig pcscd off chkconfig portmap off chkconfig rpcgssd off chkconfig rpcidmapd off chkconfig sendmail off chkconfig setroubleshoot off chkconfig smartd off
运行等级3,查看优化过的服务 chkconfig –list|grep 3:on