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[#]: collector: (lujun9972)
[#]: translator: (geekpi)
[#]: reviewer: ( )
[#]: publisher: ( )
[#]: url: ( )
[#]: subject: (How To Check Your IP Address in Ubuntu [Beginner’s Tip])
[#]: via: (https://itsfoss.com/check-ip-address-ubuntu/)
[#]: author: (Sergiu https://itsfoss.com/author/sergiu/)
How To Check Your IP Address in Ubuntu [Beginner’s Tip]
======
Wonder what’s your IP address? Here are several ways to check IP address in Ubuntu and other Linux distributions.
![][1]
### What is an IP Address?
An **Internet Protocol address** (commonly referred to as **IP address**) is a numerical label assigned to each device connected to a computer network (using the Internet Protocol). An IP address serves both the purpose of identification and localisation of a machine.
The **IP address** is _unique_ within the network, allowing the communication between all connected devices.
You should also know that there are two **types of IP addresses**: **public** and **private**. The **public IP address** is the address used to communicate over the Internet, the same way your physical address is used for postal mail. However, in the context of a local network (such as a home where are router is used), each device is assigned a **private IP address** unique within this sub-network. This is used inside this local network, without directly exposing the public IP (which is used by the router to communicate with the Internet).
Another distinction can be made between **IPv4** and **IPv6** protocol. **IPv4** is the classic IP format,consisting of a basic 4 part structure, with four bytes separated by dots (e.g. 127.0.0.1). However, with the growing number of devices, IPv4 will soon be unable to offer enough addresses. This is why **IPv6** was invented, a format using **128-bit addresses** (compared to the **32-bit addresses** used by **IPv4**).
## Checking your IP Address in Ubuntu [Terminal Method]
The fastest and the simplest way to check your IP address is by using the ip command. You can use this command in the following fashion:
```
ip addr show
```
It will show you both IPv4 and IPv6 addresses:
![Display IP Address in Ubuntu Linux][2]
Actually, you can further shorten this command to just `ip a`. It will give you the exact same result.
```
ip a
```
If you prefer to get minimal details, you can also use **hostname**:
```
hostname -I
```
There are some other [ways to check IP address in Linux][3] but these two commands are more than enough to serve the purpose.
[][4]
Suggested read  How to Disable IPv6 on Ubuntu Linux
What about ifconfig?
Long-time users might be tempted to use ifconfig (part of net-tools), but that program is deprecated. Some newer Linux distributions don’t include this package anymore and if you try running it, you’ll see ifconfig command not found error.
## Checking IP address in Ubuntu [GUI Method]
If you are not comfortable with the command line, you can also check IP address graphically.
Open up the Ubuntu Applications Menu (**Show Applications** in the bottom-left corner of the screen) and search for **Settings** and click on the icon:
![Applications Menu Settings][5]
This should open up the **Settings Menu**. Go to **Network**:
![Network Settings Ubuntu][6]
Pressing on the **gear icon** next to your connection should open up a window with more settings and information about your link to the network, including your IP address:
![IP Address GUI Ubuntu][7]
## Bonus Tip: Checking your Public IP Address (for desktop computers)
First of all, to check your **public IP address** (used for communicating with servers etc.) you can [use curl command][8]. Open up a terminal and enter the following command:
```
curl ifconfig.me
```
This should simply return your IP address with no additional bulk information. I would recommend being careful when sharing this address, since it is the equivalent to giving out your personal address.
**Note:** _If **curl** isn’t installed on your system, simply use **sudo apt install curl -y** to solve the problem, then try again._
Another simple way you can see your public IP address is by searching for **ip address** on Google.
**Summary**
In this article I went through the different ways you can find your IP address in Uuntu Linux, as well as giving you a basic overview of what IP addresses are used for and why they are so important for us.
I hope you enjoyed this quick guide. Let us know if you found this explanation helpful in the comments section!
--------------------------------------------------------------------------------
via: https://itsfoss.com/check-ip-address-ubuntu/
作者：[Sergiu][a]
选题：[lujun9972][b]
译者：[译者ID](https://github.com/译者ID)
校对：[校对者ID](https://github.com/校对者ID)
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
[a]: https://itsfoss.com/author/sergiu/
[b]: https://github.com/lujun9972
[1]: https://i1.wp.com/itsfoss.com/wp-content/uploads/2019/08/checking-ip-address-ubuntu.png?resize=800%2C450&ssl=1
[2]: https://i1.wp.com/itsfoss.com/wp-content/uploads/2019/08/ip_addr_show.png?fit=800%2C493&ssl=1
[3]: https://linuxhandbook.com/find-ip-address/
[4]: https://itsfoss.com/disable-ipv6-ubuntu-linux/
[5]: https://i2.wp.com/itsfoss.com/wp-content/uploads/2019/08/applications_menu_settings.jpg?fit=800%2C309&ssl=1
[6]: https://i1.wp.com/itsfoss.com/wp-content/uploads/2019/08/network_settings_ubuntu.jpg?fit=800%2C591&ssl=1
[7]: https://i1.wp.com/itsfoss.com/wp-content/uploads/2019/08/ip_address_gui_ubuntu.png?fit=800%2C510&ssl=1
[8]: https://linuxhandbook.com/curl-command-examples/

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[#]: collector: (lujun9972)
[#]: translator: (geekpi)
[#]: reviewer: ( )
[#]: publisher: ( )
[#]: url: ( )
[#]: subject: (How To Check Your IP Address in Ubuntu [Beginner’s Tip])
[#]: via: (https://itsfoss.com/check-ip-address-ubuntu/)
[#]: author: (Sergiu https://itsfoss.com/author/sergiu/)
如何在 Ubuntu 中检查你的 IP 地址（初学者教程）
======
不知道你的 IP 地址是什么？以下是在 Ubuntu 和其他 Linux 发行版中检查 IP 地址的几种方法。
![][1]
### 什么是 IP 地址？
**互联网协议地址**（通常称为 **IP 地址**）是分配给连接到计算机网络的每个设备（使用互联网协议）的数字标签。IP 地址用于识别和定位机器。
**IP 地址**在网络中是_唯一的_，使得所有连接设备能够通信。
你还应该知道有两种**类型的 IP 地址**：**公有**和**私有**。**公有 IP 地址**是用于互联网通信的地址，这与你用于邮件的物理地址相同。但是，在本地网络（例如使用路由器的家庭）的环境中，会为每个设备分配在该子网内唯一的**私有 IP 地址**。这在本地网络中使用，而不直接暴露公有 IP（路由器用它与互联网通信）。
另外还有区分 **IPv4** 和 **IPv6** 协议。**IPv4** 是经典的 IP 格式，它由基本的 4 部分结构组成，四个字节用点分隔（例如 127.0.0.1）。但是，随着设备数量的增加，IPv4 很快就无法提供足够的地址。这就是 **IPv6** 被发明的原因，它使用 **128 位地址**的格式（与 **IPv4** 使用的 **32 位地址**相比）。
## 在 Ubuntu 中检查你的 IP 地址（终端方式）
检查 IP 地址的最快和最简单的方法是使用 ip 命令。你可以按以下方式使用此命令：
```
ip addr show
```
它将同时显示 IPv4 和 IPv6 地址：
![Display IP Address in Ubuntu Linux][2]
实际上，你可以进一步缩短这个命令 `ip a`。它会给你完全相同的结果。
```
ip a
```
如果你希望获得最少的细节，也可以使用 **hostname**：
```
hostname -I
```
还有一些[在 Linux 中检查 IP 地址的方法][3]，但是这两个命令足以满足这个目的。
ifconfig 如何？
老用户可能会想要使用 ifconfig（net-tools 的一部分），但该程序已被弃用。一些较新的 Linux 发行版不再包含此软件包，如果你尝试运行它，你将看到 ifconfig 命令未找到的错误。
## 在 Ubuntu 中检查你的 IP 地址（GUI 方式）
如果你对命令行不熟悉，你还可以使用图形方式检查 IP 地址。
打开 Ubuntu 应用菜单（在屏幕左下角**显示应用**）并搜索**Settings**，然后单击图标：
![Applications Menu Settings][5]
这应该会打开**设置菜单**。进入**网络**：
![Network Settings Ubuntu][6]
按下连接旁边的**齿轮图标**会打开一个窗口，其中包含更多设置和有关你网络链接的信息，其中包括你的 IP 地址：
![IP Address GUI Ubuntu][7]
## 额外提示：检查你的公共 IP 地址（适用于台式计算机）
首先，要检查你的**公有 IP 地址**（用于与服务器通信），你可以[使用 curl 命令][8]。打开终端并输入以下命令：
```
curl ifconfig.me
```
这应该只会返回你的 IP 地址而没有其他多余信息。我建议在分享这个地址时要小心，因为这相当于公布你的个人地址。
**注意：** _如果 **curl** 没有安装，只需使用 **sudo apt install curl -y** 来解决问题，然后再试一次。_
另一种可以查看公共 IP 地址的简单方法是在 Google 中搜索 **ip address**。
**总结**
在本文中，我介绍了在 Uuntu Linux 中找到 IP 地址的不同方法，并向你概述了 IP 地址的用途以及它们对我们如此重要的原因。
我希望你喜欢这篇文章。如果你觉得文章有用，请在评论栏告诉我们！
--------------------------------------------------------------------------------
via: https://itsfoss.com/check-ip-address-ubuntu/
作者：[Sergiu][a]
选题：[lujun9972][b]
译者：[geekpi](https://github.com/geekpi)
校对：[校对者ID](https://github.com/校对者ID)
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
[a]: https://itsfoss.com/author/sergiu/
[b]: https://github.com/lujun9972
[1]: https://i1.wp.com/itsfoss.com/wp-content/uploads/2019/08/checking-ip-address-ubuntu.png?resize=800%2C450&ssl=1
[2]: https://i1.wp.com/itsfoss.com/wp-content/uploads/2019/08/ip_addr_show.png?fit=800%2C493&ssl=1
[3]: https://linuxhandbook.com/find-ip-address/
[5]: https://i2.wp.com/itsfoss.com/wp-content/uploads/2019/08/applications_menu_settings.jpg?fit=800%2C309&ssl=1
[6]: https://i1.wp.com/itsfoss.com/wp-content/uploads/2019/08/network_settings_ubuntu.jpg?fit=800%2C591&ssl=1
[7]: https://i1.wp.com/itsfoss.com/wp-content/uploads/2019/08/ip_address_gui_ubuntu.png?fit=800%2C510&ssl=1
[8]: https://linuxhandbook.com/curl-command-examples/