How to find my private and public IP address in Linux?
Jul 09, 2025 am 12:37 AMIn 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.
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 http://miracleart.cn/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.
The above is the detailed content of How to find my private and public IP address in Linux?. For more information, please follow other related articles on the PHP Chinese website!

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