Checking your IP address in Ubuntu can be done quickly using several built-in terminal commands. Below are the primary methods:
Table of Contents
1. Using the ip Command (Most Common)
The standard way to identify all available network interfaces and their associated IP addresses is by using the ip command from the iproute2 suite.
- Command:
ip addr - Expected Output: This command displays detailed information for every interface. Look for the line starting with
inet(for IPv4) orinet6(for IPv6). For example, an active Ethernet interface might show:inet 10.102.66.200/24 brd 10.102.66.255 scope global dynamic eth0.
For a more concise summary, you can use the “brief” flag:
- Command:
ip -4 -brief address show - Expected Output: This provides a clean table showing the interface name, status, and IPv4 address (e.g.,
ibmveth2 UNKNOWN 10.245.246.42/24).
2. Using Netplan
On modern Ubuntu systems, you can use Netplan to get a high-level overview of your network interfaces and correlated information, such as default routes and DNS addresses.
- Command:
sudo netplan status -a - Expected Output: This lists active interfaces and their addresses in an easy-to-read format:
Addresses: 10.102.66.200/24 (dynamic, dhcp).
3. Using landscape-sysinfo
If you want a quick snapshot of system health along with your network identity, the landscape-sysinfo tool provides this data.
- Command:
landscape-sysinfo - Expected Output: Among other stats like system load and memory usage, it explicitly lists your IP addresses:
IPv4 address for enp5s0: 10.185.198.41.
Summary Table: IP Check Commands
| Command | Best Use Case |
|---|---|
ip addr | Detailed view of all interfaces and parameters. |
ip -4 -brief address show | Quick, readable summary of IPv4 addresses. |
sudo netplan status -a | Comprehensive overview of interfaces and routes. |
landscape-sysinfo | Snapshot of IP addresses along with system performance. |
Tip: When managing remote servers, always verify your IP address before making persistent configuration changes to avoid losing access to your system.
