[SOLVED] bash test if all the Ethernet Cards in the machine has Link

Issue

How can I check in bash scripting if the ethernet cards are linked in a Linux OS

id='dv4'>

Solution

Some form like this may work for you

ip -o link | grep NO_CARRIER

This checks to make sure every network interface (even logical ones) has a connection

• ip from iproute2
• -o show output on one line (per interface) to simplify for grep
• link show information about links

Answered By - ti7

Answer Checked By - Candace Johnson (WPSolving Volunteer)