udhcpc 命令 获得IP地址(笔记本 机顶盒 通过路由器DHCP 上网)

[gx@ development_ipanel0630]cat /etc/resolv.conf

 

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)

 

#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN

 

nameserver 127.0.0.1

 

 

[gx@ development_ipanel0630]sudo ethtool eth0

 

Settings for eth0:

 

    Supported ports: [ TP ]

 

    Supported link modes:   10baseT/Half 10baseT/Full

 

                            100baseT/Half 100baseT/Full

 

                            1000baseT/Full

 

    Supported pause frame use: No

 

    Supports auto-negotiation: Yes

 

    Advertised link modes:  10baseT/Half 10baseT/Full

 

                            100baseT/Half 100baseT/Full

 

                            1000baseT/Full

 

    Advertised pause frame use: No

 

    Advertised auto-negotiation: Yes

 

    Speed: 100Mb/s

 

    Duplex: Full

 

    Port: Twisted Pair

 

    PHYAD: 2

 

    Transceiver: internal

 

    Auto-negotiation: on

 

    MDI-X: on

 

    Supports Wake-on: pumbg

 

    Wake-on: g

 

    Current message level: 0x00000007 (7)

 

                  drv probe link

 

    Link detected: yes




笔记本 机顶盒 通过路由器DHCP 上网

 

1.default.script

 

22.sh



F:\gx3201\t2\T2with_wifi_code\linux\gx3201_rootfs\usr\share\udhcpc 


#!/bin/sh

# udhcpc script edited by Tim Riker <Tim@Rikers.org>



RESOLV_CONF="/home/gx/resolv.conf"



[ -n "$1" ] || { echo "Error: should be called from udhcpc"; exit 1; }



NETMASK=""

[ -n "$subnet" ] && NETMASK="netmask $subnet"

BROADCAST="broadcast +"

[ -n "$broadcast" ] && BROADCAST="broadcast $broadcast"



case "$1" in

	deconfig)

		echo "Setting IP address 0.0.0.0 on $interface"

		ifconfig $interface 0.0.0.0

		;;



	renew|bound)

		echo "Setting IP address $ip on $interface"

		ifconfig $interface $ip $NETMASK $BROADCAST



		if [ -n "$router" ] ; then

			echo "Deleting routers"

			while route del default gw 0.0.0.0 dev $interface ; do

				:

			done



			metric=0

			for i in $router ; do

				echo "Adding router $i"

				route add default gw $i dev $interface metric $((metric++))

			done

		fi



		echo "Recreating $RESOLV_CONF"

		echo -n > $RESOLV_CONF-$$

		[ -n "$domain" ] && echo "search $domain" >> $RESOLV_CONF-$$

		for i in $dns ; do

			echo " Adding DNS server $i"

			echo "nameserver $i" >> $RESOLV_CONF-$$

		done

		mv $RESOLV_CONF-$$ $RESOLV_CONF

		;;

esac



exit 0


 

 

2.UBUNTU 执行脚本

[xushx@ dd]vi /usr/share/udhcpc/default.script

 

[xushx@ dd]sudo ./22.sh

 

udhcpc (v1.18.5) started

 

0=/usr/share/udhcpc/default.script 1=deconfig

 

bro=

 

subnet=

 

router=

 

hihi=eth0 BROADCAST= NETMASK=

 

Sending discover...

 

Sending select for 192.168.1.2...

 

Lease of 192.168.1.2 obtained, lease time 86400

 

0=/usr/share/udhcpc/default.script 1=bound

 

bro=

 

subnet=255.255.255.0

 

router=192.168.1.1

 

hihi=eth0 192.168.1.2 BROADCAST= NETMASK=

 

/usr/share/udhcpc/default.script: Resetting default routes

 

SIOCDELRT: 没有那个进程

 

/usr/share/udhcpc/default.script: Adding DNS 192.168.1.1

 

[xushx@ dd]vi 22.sh

 

[xushx@ dd]cat /etc/resolv.conf

 

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)

 

#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN

 

nameserver 192.168.1.1

 

nameserver 127.0.0.1

 

 

[xushx@ dd]netstat -r

 

内核 IP 路由表

 

Destination     Gateway         Genmask         Flags   MSS Windowirtt Iface

 

default         192.168.1.1     0.0.0.0         UG        0 0          0 eth0

 

192.168.1.0     *               255.255.255.0   U0 0          0 eth0

 

192.168.188.0   *               255.255.255.0   U0 0          0 wlan0

 

[xushx@ dd]route -n

 

内核 IP 路由表

 

目标            网关            子网掩码        标志  跃点   引用  使用 接口

 

0.0.0.0192.168.1.1     0.0.0.0         UG0      0        0 eth0

 

192.168.1.0     0.0.0.0         255.255.255.0   U0      0        0 eth0

 

192.168.188.0   0.0.0.0         255.255.255.0   U2      0        0 wlan0

 

 

文章来源: blog.csdn.net，作者：悟空胆好小，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/xushx_bigbear/article/details/123364760