/etc/redhat-release
/etc/hostname
/etc/ssh/sshd_config
/proc/meminfo
/proc/cpuinfo
/etc/issue 查看系统版本号
/etc/rc.d/rc.local 自定义开机启动程序
/etc/resolv.conf
/etc/syscofig/network 修改主机名
/var/log/messages
/etc/sysctl.conf
