syslog 是 linux 系统日志服务。关闭 selinux ，vim /etc/sysconfig/selinux，将SELINUX=enforcing改为disabled。
脚本如下：
#!/bin/bash
#系统优化脚本，关闭除了crond、network、sshd之外其它不常用的服务。
for i in `ls /etc/rc3.d/S*`
do
CURSRV=`echo $i|cut -c 15-`
echo $CURSRV
case $CURSRV in
crond | irqbalance | microcode_ctl | network | random | sshd | syslog | local )
echo "Base services, Skip!"
;;
*)
echo "change $CURSRV to off"
chkconfig --level 235 $CURSRV off
service $CURSRV stop
;;
esac
done
