Linux Getting Started Basics (12) Linux Network infrastructure configuration

Ethernet Connection

In Linux, the Ethernet interface is named: eth0,eth1, 0, 1 for network card number

The LSPCI command allows you to view the hardware information for your network card (if you are a USB card, you may need to use the LSUSB command)

Ifconfig command (interface configuration) to view interface information:

$ ifconfig-a View All interfaces

$ ifconfig eth0 View the specified interface

Command Ifup,ifdown to enable, disable an interface

$ ifup Wlan0

$ Ifdown Wlan0

Network Test command

Test network connectivity:

$ ping 192.168.1.1

$ ping baidu.com

Testing DNS Resolution

$ host Www.baidu.com

$ dig www.baidu.com

View the routing table

$ IP route

Track the network path to the destination address

(Ubuntu installation $sudo apt-get install traceroute)

$ traceroute www.baidu.com

Network quality testing using MTR (combined with traceroute and ping)

$ mtr www.baidu.com

Modify Host Name

Modify host name in real time:

$ hostname Shuangde

Permanently modify host Name

/etc/hostname (Ubuntu): Directly modify the name

/etc/sysconfig/network (RedHat): HOSTNAME = Shuangde

Troubleshooting

Network troubleshooting follows the process from bottom to top, from itself to the outside

Check that the network configuration information is correct first:

-ip Address

-Subnet mask

-Network Management

-dns

To see if the network management is connected

Ping Network Management IP address

To see if DNS resolution is normal:

$ host Www.baidu.com

$ host Www.douban.com

See more highlights of this column: http://www.bianceng.cnhttp://www.bianceng.cn/OS/Linux/