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This article mainly explains "the usage of the Linux basic command ifcfg". The content of the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "the usage of the Linux basic command ifcfg".

Ifcfg

Ifcfg is a simple script to replace the iconfig command that sets the ip address of the network interface.

The scope of this command: RedHat, RHEL, Ubuntu, CentOS, SUSE, openSUSE, Fedora.

1. Grammar

Ifcfg [device] [cmd] [address]

Device is a network card device, it may have an alias. Cmd can be add, delete, stop. Address is the ip address.

2. List of options

None

3. Examples

1) add ip address

[root@localhost ~] # ifcfg eth0 add 192.168.0.250 Universe 24 / / add address 250

Forwarding is ON or its state is unknown (4). OK, No RDISC.

[root@localhost ~] # ifconfig / / View network information

Eth0 Link encap:Ethernet HWaddr 08:00:27:14:33:57

Inet addr:192.168.0.250 Bcast:192.168.0.255 Mask:255.255.255.0

Inet6 addr: fe80::a00:27ff:fe14:3357/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:107276 errors:0 dropped:0 overruns:0 frame:0

TX packets:72250 errors:0 dropped:0 overruns:0 carrier:0

Collisions:0 txqueuelen:1000

RX bytes:83580745 (79.7MiB) TX bytes:5842176 (5.5MiB)

2) Delete ip address

[root@localhost ~] # ifcfg eth0 delete 192.168.0.250 Universe 24 / / Delete Nic address

Forwarding is ON or its state is unknown (4). OK, No RDISC.

[root@localhost ~] # ifconfig / / View the Nic information. The ip address has been deleted

Eth0 Link encap:Ethernet HWaddr 08:00:27:14:33:57

Inet6 addr: fe80::a00:27ff:fe14:3357/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:107276 errors:0 dropped:0 overruns:0 frame:0

TX packets:72251 errors:0 dropped:0 overruns:0 carrier:0

Collisions:0 txqueuelen:1000

RX bytes:83580745 (79.7MiB) TX bytes:5842218 (5.5MiB)

Thank you for your reading, the above is the content of "the usage of the Linux basic command ifcfg". After the study of this article, I believe you have a deeper understanding of the usage of the Linux basic command ifcfg, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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