How to use iwconfig command in Linux?

The iwconfig command in Linux is similar to ifconfig command but instead of configuring all types of network interfaces, it is used specifically to display and configure different parameters of a wireless network interface. For example, you can configure the SSID, frequency, and password, or encryption type of a wireless network.

In this article, I will discuss iwconfig command and its usage in a Linux system.

Syntax of iwconfig command in Linux

iwconfig [interface] [options]

Where interface is the name of the wireless network interface and you can find a list of detailed options that can be used with the iwconfig on its man page.

Usage of iwconfig command in Linux

When iwconfig is used without any arguments it will display all the wireless network interfaces on a system.

For example –

iwconfig

You can see the output in the given image –

iwconfig

Change ESSID of a wireless network

To set ESSID or network name or domain id you can use the following command in your terminal –

sudo iwconfig wlp1s0 essid "wifi1"

Where wlp1s0 is the name of the wireless network interface and we are setting its name to “wifi1“.

Set Network ID

The nwid option is used to set the network id on/off. This function is used only for wireless network hardware before the 802.11 standards.

sudo iwconfig enp2s0 nwid on/off

Set nickname for a wireless network

By using the given command you can set the nickname for a wireless network.

For example –

sudo iwconfig wlp1s0 nickname "mywifi"

Set mode of operation of a wireless network

For a wireless network, the mode of operation could be Ad-Hoc, Managed, Master, Repeater, Secondary, and Monitor. Use the following command to change the operating mode –

sudo iwconfig wlp1s0 mode Ad-Hoc

Set operating frequency or channel

The following command will set the operating frequency and channel in the wireless network device.

sudo iwconfig wlp1s0 freq 5.0

Similarly to set channel use –

sudo iwconfig wlp1s0 channel 2

Please don’t forget to replace the wlp1s0 with the correct interface name on your system.

You can get more information about the usage of this command by visiting its man or help page.

Now use –

man iwconfig

OR –

iwconfig --help

iwconfig help

Conclusion

Ok, so I hope now you understand how to use iwconfig command in Linux. Now if you have a query then write us in the comments below.

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