Table of Contents
View private IP address: ip or hostname command
Get the public IP address: Use curl to request external services
How to view it in the graphical interface?
Supplementary tips: Make common commands alias
Home System Tutorial LINUX How to find my private and public IP address in Linux?

How to find my private and public IP address in Linux?

Jul 09, 2025 am 12:37 AM
linux IP address

In Linux systems, 1. Use the ip a or hostname -I command to view the private IP; 2. Use curl ifconfig.me or curl ipinfo.io/ip to obtain the public IP; 3. Use the desktop version to view the private IP through the system settings, and the browser accesses specific websites to view the public IP; 4. You can set common commands to alias for quick call. These methods are simple and practical, suitable for IP viewing needs in different scenarios.

How to find my private and public IP address in Linux?

It is actually not difficult to view private IP and public IP addresses in Linux systems. You can quickly get it done by mastering a few commonly used commands. Private IP is usually used for internal communications in LANs, while public IP is your unique identifier on the network. Here are a few simple and effective methods.


View private IP address: ip or hostname command

The most common way is to use the ip command to view the private IP of the current host. Open the terminal and enter:

 ip a

You will see an output like this:

 2: eth0: <BROADCAST,MULTICAST,UP> mtu 1500...
    inet 192.168.1.100/24 ​​brd 192.168.1.255 scope global dynamic eth0

The following inet is your private IP address (such as 192.168.1.100 ).

You can also use this simpler command to directly extract the IP:

 hostname -I

This command will directly list all private IPs that are not local loopback, which are suitable for scripting.


Get the public IP address: Use curl to request external services

The Linux host itself does not save public IP, so it needs to use network services to obtain it. A common method is to use curl to request a website that returns an IP, for example:

 curl ifconfig.me

or:

 curl ipinfo.io/ip

These services will return your current public IP. If you are behind NAT, such as a home router or cloud server, this IP is the one assigned by the router or service provider.

If curl is not installed, you can try to replace it with wget :

 wget -qO- ifconfig.me

How to view it in the graphical interface?

If you are using desktop version of Linux, such as Ubuntu GNOME or KDE, you can view the private IP through the "Network" section of your system settings.

As for public IP, the graphical interface is generally not displayed directly, but you can open the browser to visit websites such as //m.sbmmt.com/link/08780eb9b58091a2d4b81a1af602b617 to view it.


Supplementary tips: Make common commands alias

If you often want to check the IP, you can add these commands to .bashrc or .zshrc , for example:

 alias myip="curl -s ifconfig.me"
alias localip="hostname -I"

Then execute source ~/.bashrc (or source ~/.zshrc ), and then you only need to enter myip and localip to quickly view it.


Basically, that's all, the operation is not complicated but the details are easy to ignore. For example, some commands need to be connected to the Internet, and some are only suitable for IPv4. When you encounter problems, you can try man ip or man curl to read the help documentation.

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