more /proc/cpuinfo 查看CPU硬件信息（meminfo）
getconf LONG_BIT 产看CPU位数
more /etc/redhat-release 查看版本
uname -r 查看内核 2.6.18-238.el5
uname -a
fdisk -l 产看分区
cat -n /root/install.log 查看系统安装软件
rpm -qa 查看安装软件
yum list installed
cat /etc/sysconfig/keyboard 键盘布局
sestatus cat /etc/sysconfig/selinux
cat /etc/sysconfig/network-scripts/ifcfg-eth0
查看网关
cat /etc/sysconfig/network
查看dns cat /etc/resolv.conf
hostname
cat /etc/sysconfig/network