关闭不必要的系统服务

for ser in `chkconfig --list |grep 3:on |awk '{print $1}'`
do
  echo $ser
  case $ser in (crond | irqbalance | microcode_ctl | network | random | sendmail \
                | sshd | syslog | messagebus | haldaemon | readahead_early \
                | apmd | readahead_later | readahead | iptables \
                | lvm2-monitor|xinetd | auditd | cpuspeed )
       echo "Base services, Skip"
  ;;
  *)
       echo "change $ser to off"
       chkconfig --level 3 $ser off
       service $ser stop
  ;;
  esac
done