If you are using the libvirt and associated tools, then you must be aware about virt-manager. However this being a GUI tools, it is not possible to always use this. “virsh” is a good option for this.

To start with, if you need to know all the VMs all the running VMs, then you can use (to only view the names):

virsh list --name

Extending this to make it more useful is the case if you need to know the IP address for the running VMs. Here is a simple code that you can put in alias or function that can be used to get the IP address of the running VM’s.

virsh list --name | \
while read line 
do
      [[ ! -z $line ]] && virsh domifaddr $line
done

Bonus note:
If you want to start the VM, then you can use

virsh start

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