Linux and etc and network and interfaces Configuration Interface Method

The/etc/network/interfaces file under Linux is used to configure the network interface.

Initialize the network port Ethernet Interface

Most network interface configurations can be addressed in/etc/network/interfaces. For example, configure static IP (dhcp) for network card, set routing information, configure IP mask, set default route, etc.

PS: If you want to start the network port automatically when the system starts up, you need to add an auto1 line, as shown in the following example.

1. Use dynamic IP addresses

auto eth0
iface eth0 inet dhcp

2. Use static IP addresses

auto eth0
iface eth0 inet static
  address 192.168.1.100
  netmask 255.255.255.0
  gateway 192.168.1.1
#  network 192.168.1.0
#  broadcast 192.168.1.255

network and broadcast1 just use the default values.

3. View the routing table

# route
Kernel IP routing table
Destination   Gateway     Genmask     Flags Metric Ref  Use Iface
default     192.168.1.1   0.0.0.0     UG  0   0    0 eth0
192.168.1.0   *        255.255.255.0  U   0   0    0 eth0
# route -n
Kernel IP routing table
Destination   Gateway     Genmask     Flags Metric Ref  Use Iface
0.0.0.0     192.168.1.1   0.0.0.0     UG  0   0    0 eth0
192.168.1.0   0.0.0.0     255.255.255.0  U   0   0    0 eth0

route-n does not resolve names.

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