From the command line you would need to know where the VM’s config file (vmx) is located.
To find the full path to the vmx file, you can run:
vmware-cmd -l | grep -i <the name of the guest>
or just vmware-cmd -l to list all of the guests.
Once you have the name of the .vmx file, you can run the command below:
vmware-cmd </vmfs/volumes/DATASTORE/VM_DIR/vm.vmx> start