How to Get Mac Address from Linux Command Line

In this article, we will discuss how to get the IP address of a computer using its MAC address on the Linux command line.

You may be familiar with using Windows' ping command to find a computer's MAC address. However, in order to use this method, you need to know the IP address associated with the MAC address you are trying to find. If you don't have this information, you can use the ARP (Address Resolution Protocol) command on your Linux system.

Using the ARP Command

The ARP command is used to maintain a cache of MAC-to-IP address mappings on your Linux system. You can use this command in several ways to get the IP address associated with a given MAC address.

To delete an entry from the ARP cache, you can use the `-d` option followed by the MAC address. For example:

```

arp -d 00:50:56:c0:00:08

```

This will remove any entries for the system with the specified MAC address from the ARP cache.

To add a static entry to the ARP cache, you can use the `-S` option followed by the MAC address and the IP address. For example:

```

arp -S 00:50:56:c0:00:08 10.0.0.1

```

This will add an entry for the system with the specified MAC address and IP address to the ARP cache.

To find the IP address of a given MAC address, you can use the `-s` option followed by the MAC address. For example:

```

arp -s 00:50:56:c0:00:08

```

This will show you the IP address associated with the specified MAC address.

Finally, to display the contents of the ARP cache, you can use the `-a` option. This will list all of the entries in the ARP cache, including the MAC and IP addresses.

In this article, we have discussed how to get the IP address of a computer using its MAC address on the Linux command line. We have used several examples to demonstrate how to use the ARP command to add, delete, and display entries in the ARP cache. By following these steps, you should be able to easily find the IP address associated with a given MAC address on your Linux system.

Get mac address from linux command line