Get interface name into linux shell script variable

Get interface name into linux shell script variable

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I would like to store an interface name into a variable in linux shell script. I found a solution to do this via "grep" command and the IP-Address. My problem is that my interface doesn't have an IP-Address at this moment.

The interface name always begins with "enx" and the MAC-Address like "enxb2240be99fc3" while the MAC-Address can change every reboot.

Is there a solution to get this interface name into a shell script variable?

iname=$(ip -o link show | sed -rn '/^[0-9]+: en/{s/.: ([^:]*):.*/\1/p}')

save the interface name to variable iname

Bash script to retrieve name of Ethernet Network interface, If you want to exclude interfaces like vir , loopback and wl (wireless) then the following should do the trick. ip link | awk -F: '$0 !~ "lo|vir|wl|^[^0-9]"{print $2;​getline}'. It's not so easy if you want to take into account wlan and other alternative interfaces. If you know which interface you want the address for (e.g., eth0, the first Ethernet card), you can use this: ip="$(ifconfig | grep -A 1 'eth0' | tail -1 | cut -d ':' -f 2 | cut -d ' ' -f 1)"

ip addr show | awk '/inet.*brd/{print $NF}'

this is also works,check it...

Get interface name into linux shell script variable, shell script get ip address linux get active interface name linux interface names bash get ip address of interface how to find network interface name in linux So basically we need a name, or some sort of identifier to retrieve the stored information. This is where variables comes into picture. In this article, we will be discussing about variables in bash shell scripting. This article is part of the tutorial series about "bash shell scripting".

iname=$(ls /sys/class/net | grep -i enx)
echo $iname

How to get my own IP address and save it to a variable in a shell , To get IPv4 and IPv6 addresses, and not assume the main interface is eth0 (​these "on match" - otherwise only the first command to following the match would be Assuming that you may have various interfaces of various name but that you  Because all interfaces would displayed under /sys/class/, such as /sys/class/net/ listing all network interfaces, it is possible to directly use this directly search and return the exact interface name through a simple keyword like: ls /sys/class/net | grep enp

Bash Shell Command to Find or Get IP address, Explains various Bash shell commands to find or get IP addresses and other interface card) name will be different as per your version of Unix  Each value on the command line after the name of the script will be assigned to the special variables $1, $2, $3, and so on. The name of the currently running script is stored in the $0 variable. Here are some other special variables you will find useful in script writing:

An Introduction to Linux Shell Scripting for DBAs, The term shell simply refers to the particular command-line user interface you use to you have executable permission for a file, you can run it from the command line by typing its name. To access the first parameter, you use the $1 variable. A shell script allows us to set and use our own variables within the script. Setting variables allows you to temporarily store data and use it throughout the script, making the shell script more like a real computer program. User variables can be any text string of up to 20 letters, digits, or an underscore character. User variables are case

List of Environment Variables in Linux/Unix, Environment variables are dynamic values which affect the a Chinese user is shown a Mandarin interface while an American user is the shell looks for the command in different directories mentioned in the Make sure that you type the variable name in the right letter case otherwise you may not get the  In this chapter, we will learn how to use Shell variables in Unix. A variable is a character string to which we assign a value. The value assigned could be a number, text, filename, device, or any other type of data. A variable is nothing more than a pointer to the actual data. The shell enables you