I want to experiment with the bitcoin-cli in the easiest way. I just installed bitcoin core and waiting for it to download the blockchain. Is there a way meanwhile I can run bitcoind and/or bitcoin-cli, that doesn't require downloading the whole blockchain? I guess running the test-net is a natural approach. My main problem is: I don't see the bitcoind and bitcoin-cli executables anywhere on my system. I'm running Ubuntu 16.04.1 LTS and installed bitcoin core through the command line as described here: http://bitzuma.com/posts/getting-started-with-bitcoin-core-on-ubuntu/
bitcoin-qt from the command line.