###########
bootstrap 启动加载器 (pxelinux.0)
传输pxelinux.cfg

NIC #network interface

PXE
pxelinux.0
/tftp/pxelinux.cfg/default

############
DHCP
rpm -ivh dhcp-xxxxx
/etc/sysconfig/network-script/ifcfg-eth0 网卡配置文件
/etc/dhcp/dhcpd.conf dhcp配置文件位置
:r /usr/share/doc/dhcp*/dhcpd.conf.sample
subnet 192.168.1.0 netmask 255.255.255.0
{
range 192.168.1.x 192.168.1.x;
option routers 192.168.1.250;
}

next-server 192.168.1.180
filename "/pxelinux.0";

service dhcpd restart
#########

ln -s 源 目的 做链接

mount -o loop xxxx /opt/ 将xxxx作为一个设备挂在到/opt/

/var/ftp/pub 默认ftp的目录