Sure thing, there are some great command tools for this.
You can follow these steps to access Umbrel from the terminal
then you can use bitcoin-cli to interact with your bitcoin node directly
sudo ~/umbrel/scripts/app compose bitcoin exec bitcoind bitcoin-cli help
or lncli to interact with your LND wallet directly (Umbrel uses LND as your main onchain & lightning wallet)
sudo ~/umbrel/scripts/app compose lightning exec lnd lncli help
Be careful sending a transaction from this interface until you are confident in what you are doing, but you can probe many different things about your node from here.