Linux for Developers Course
Linux for Developers
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Intermediate

ip Command

Definition

The modern, powerful suite of commands used for network interface configuration, routing, and checking IP addresses on Linux.

Explain Like I'm New

The command that tells you your computer's digital address on the network.

Real World Example

You want to know your server's local IP address. You type `ip addr show`. It outputs a block of text revealing your IP is `192.168.1.15`.

Common Use Cases

  • •Checking IP addresses
  • •Configuring network interfaces

Interview Questions

basic

  • What older, highly famous command did the `ip` command replace?

intermediate

  • What does the command `ip link set eth0 down` do?

Flash Cards

Question

What command did it replace?

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Answer

`ifconfig`. (Note: `ifconfig` is technically deprecated in modern Linux, though many admins still use it out of habit).

Question

What does 'down' do?

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Answer

It physically disables (turns off) the network card named 'eth0', instantly disconnecting the server from the internet.