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sources/tech/20200422 How to Check the Available Network Interfaces, Associated IP Addresses, MAC Addresses, and Interface Speed on Linux.md → translated/tech/20200422 How to Check the Available Network Interfaces, Associated IP Addresses, MAC Addresses, and Interface Speed on Linux.md
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@ -7,28 +7,28 @@
[#]: via: (https://www.2daygeek.com/linux-unix-check-network-interfaces-names-nic-speed-ip-mac-address/)
[#]: author: (Magesh Maruthamuthu https://www.2daygeek.com/author/magesh/)
How to Check the Available Network Interfaces, Associated IP Addresses, MAC Addresses, and Interface Speed on Linux
如何在 Linux 上检查可用的网络接口、关联的 IP 地址、MAC 地址和接口速度
======
By default when you set up the server you will configure the primary network interface.
默认在设置服务器时，你将配置主网络接口。
This is part of the build work that everyone does.
这是每个人所做的构建工作的一部分。
Sometimes you may need to configure an additional network interface for several reasons.
有时出于各种原因，你可能需要配置额外的网络接口。
This could be a network bonding/teaming or high availability or a separate interface for application requirements or backups.
这可以是网络绑定/团队合作或高可用性，也可以是用于应用需求或备份的单独接口。
To do so, you need to know how many interfaces your computer has and their speed to configure it.
为此，你需要知道计算机有多少接口以及它们的配置速度。
There are many commands to check for available network interfaces, but we only use the IP command.
有许多命令可检查可用的网络接口，但是我们仅使用 IP 命令。
Later we will write a separate article with all these tools.
稍后，我们将使用所有这些工具编写单独的文章。
In this tutorial, we will show you the Available Network Interface Card (NIC) information, such as the interface name, associated IP address, MAC address, and interface speed.
在本教程中，我们将向你显示可用网络网卡（NIC）信息，例如接口名称、关联的 IP 地址、MAC 地址和接口速度。
### What’s IP Command
### 什么是 IP 命令
**[IP command][1]** is similar to ifconfig, which is used to for assigning Static IP Address, Route & Default Gateway, etc.,
**[IP 命令][1]**类似于 ifconfig, 用于分配静态 IP 地址、路由和默认网关等。
```
# ip a
@ -45,17 +45,17 @@ In this tutorial, we will show you the Available Network Interface Card (NIC) in
valid_lft forever preferred_lft forever
```
### What’s ethtool Command
### 什么是 ethtool 命令
The ethtool is used to query or control network driver and hardware settings.
ethtool 用于查询或控制网络驱动或硬件设置。
```
# ethtool eth0
```
### 1) How to Check the Available Network Interfaces on Linux Using the IP Command
### 1）如何在 Linux 上使用 IP 命令检查可用的网络接口
When you run the IP command without any arguments, it gives you plenty of information, but if you only need the available network interfaces, use the following customized IP command.
在不带任何参数的情况下运行 IP 命令时，它会提供大量信息，但是，如果仅需要可用的网络接口，请使用以下定制的 IP 命令。
```
# ip a |awk '/state UP/{print $2}'
@ -64,9 +64,9 @@ eth0:
eth1:
```
### 2) How to Check the IP Address of a Network Interface on Linux Using the IP Command
### 2）如何在 Linux 上使用 IP 命令检查网络接口的 IP 地址
If you only want to see which IP address is assigned to which interface, use the following customized IP command.
如果只想查看 IP 地址分配给了哪个接口，请使用以下定制的 IP 命令。
```
# ip -o a show | cut -d ' ' -f 2,7
@ -78,18 +78,18 @@ lo 127.0.0.1/8
192.168.1.102/24
```
### 3) How to Check the Network Interface Card MAC Address on Linux Using the IP Command
### 3）如何在 Linux 上使用 IP 命令检查网卡的 MAC 地址
If you only want to see the network interface name and the corresponding MAC address, use the following format.
如果只想查看网络接口名称和相应的 MAC 地址，请使用以下格式。
To check a specific network interface MAC address.
检查特定的网络接口的 MAC 地址。
```
# ip link show dev eth0 |awk '/link/{print $2}'
00:00:00:55:43:5c
```
To check MAC address for all network interface.
检查所有网络接口的 MAC 地址。
```
# vi /opt/scripts/mac-addresses.sh
@ -102,7 +102,7 @@ ethtool -P $output
done
```
Run the below shell script to get the MAC address for multiple network interfaces.
运行下面的 shell 脚本获取多个网络接口的 MAC 地址。
```
# sh /opt/scripts/mac-addresses.sh
@ -113,11 +113,11 @@ eth1:
Permanent address: 00:00:00:55:43:5d
```
### 4) How to Check the Network Interface Port Speed on Linux Using the ethtool Command
### 4）如何在 Linux 上使用 ethtool 命令检查网络接口速度
If you want to check the network interface port speed on Linux, use the ethtool command.
如果要在 Linux 上检查网络接口速度，请使用 ethtool 命令。
To check the speed of a particular network interface port.
检查特定网络接口的速度。
```
# ethtool eth0 |grep "Speed:"
@ -125,7 +125,7 @@ To check the speed of a particular network interface port.
Speed: 10000Mb/s
```
To check the port speed for all network interfaces.
检查所有网络接口速度。
```
# vi /opt/scripts/port-speed.sh
@ -138,7 +138,7 @@ ethtool $output |grep "Speed:"
done
```
Run the below shell script to get the port speed for multiple network interfaces.
运行以下 shell 脚本获取多个网络接口速度。
```
# sh /opt/scripts/port-speed.sh
@ -149,9 +149,9 @@ eth1:
Speed: 10000Mb/s
```
### 5) Shell Script to Verify Network Interface Card Information
### 5）验证网卡信息的 Shell 脚本
This **[shell script][2]** allows you to gather all of the above information, such as network interface names, IP addresses of network interfaces, MAC addresses of network interfaces, and the speed of a network interface port.
通过此 **[shell 脚本][2]**，你可以收集上述所有信息，例如网络接口名称、网络接口的 IP 地址，网络接口的 MAC 地址以及网络接口的速度。
```
# vi /opt/scripts/nic-info.sh
@ -168,7 +168,7 @@ ethtool $iname |grep "Speed:"
done
```
Run the below shell script to check network card information.
运行以下 shell 脚本检查网卡信息。
```
# sh /opt/scripts/nic-info.sh
@ -191,7 +191,7 @@ via: https://www.2daygeek.com/linux-unix-check-network-interfaces-names-nic-spee
作者：[Magesh Maruthamuthu][a]
选题：[lujun9972][b]
译者：[译者ID](https://github.com/译者ID)
译者：[geekpi](https://github.com/geekpi)
校对：[校对者ID](https://github.com/校对者ID)
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