Here's how to check the ethernet hardware address on Linux systems. This is also called the MAC address:
- Open terminal
- Look for the address from eth0
Being able to do this is absolutely essential to being a tech. You need to be able to lookup basic computer information and diagnose network connectivity issues.
There are more Linux commands where that came from. Check out the Basic Linux Commands post for more commands you should get to know.
Update: There's a fun online terminal you can play with called JSLinux. This is a great area to practice your commands like this one!