Centos 7.x ad hoc network and routing configuration

Today, installing the CentOS 7.1 operating system on a virtual machine, using the minimal installation, when the installation is complete and ready to use the Ifconfig command, the Discovery command does not exist, as follows:

I'm sure it's the new CentOS system. By default, the Ifconfig command is not used, and a command should be used instead of the ifconfig.

On Baidu a check, sure enough, has used the IP command instead of ifconfig command. The following is a list of common IP command parameters, commonly used IP configuration as follows.

IP addr                                           // Display network card IP information IP link set eno16777736 up/down                   // turn on or off eno1677736 Nic 192.168. 100.2/ dev eno16777736      // set eno16777736 network card IP address 192.168.100.2  192.168. 100.2/ dev eno16777736      //Remove eno16777736 network card IP address 192.168.100.2

The usual temporary routing configuration is as follows:

IP Route List//View routing information, or you can use the IP route commandIP route add default via192.168.100.1                      //Set the default gateway, or you can add the dev eno16777736 laterIP route del Default via192.168.100.1                      //Delete the default gateway or directly write IP route del defaultIP route add192.168.123.0/ -Via192.168.123.1Dev eth0//set the gateway for the 192.168.123.0 network segment to 192.168.123.1, Data walk eth0 interface
IP route del 192.168.123.0/24//delete route for 192.168.100.123.0/24 network segment

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Centos 7.x ad hoc network and routing configuration