I always use nmap. To scan for all devices in your network, use:

nmap -sP 192.168.0.1/24

More here: https://www.cyberciti.biz/networking/nmap-command-examples-tutorials/

It is a great tool to know about. You may want to install nmap using:

sudo apt-get install nmap if you are using Debian or

sudo pacman -S nmap if you are using Arch.