start daemon:

bitcoind -daemon --datadir=/data/bitcoin --printtoconsole --rpcuser=ger --rpcpassword=<secret>

memory-conservative options:

bitcoin-d -daemon --datadir=/data/bitcoin --printtoconsole --rpcuser=ger --rpcpassword=<secret> --blocksonly --dbcache=50 --maxsigcachesize=4 --maxconnections=4 --rpcthreads=1 --banscore=1 --maxmempool=100  --maxorphantx=10


check if node is online on bitcoin-network:

https://bitnodes.io/nodes/94.212.140.57-8333/

check if you can get hash of genesis block 0:

bitcoin@raspberrypi:~$ bitcoin-cli getblockhash 0
000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f


create backup of wallet:

bitcoin@raspberrypi:~$ bitcoin-cli backupwallet ~/walletbackup.dat

create new pubkey/address to sent bitcoin to:

bitcoin@raspberrypi:~$ bitcoin-cli -named getnewaddress address_type=bech32
bc1qc2ykz4fvru7x5a03ulrt7lu08qmmqandkrc4xh

<sent 1 EU to address..>


check unconfirmed_balance:

bitcoin@raspberrypi:~$ bitcoin-cli getunconfirmedbalance
0.00000000

check which block we are at/sync:

bitcoin@raspberrypi:~$ bitcoin-cli getblockcount 
369100

check number of connections:

bitcoin@raspberrypi:~$ bitcoin-cli getconnectioncount
4

check blockchaininfo:

bitcoin@raspberrypi:~$ bitcoin-cli getblockchaininfo 
{
  "chain": "main",
  "blocks": 369130,
  "headers": 664786,
  "bestblockhash": "0000000000000000117a24b7765058486ff569c9db743c3ba262fa3d47719159",
  "difficulty": 52699842409.34701,
  "mediantime": 1439149569,
  "verificationprogress": 0.1329346278189584,
  "initialblockdownload": true,
  "chainwork": "00000000000000000000000000000000000000000009204346abde553d962c70",
  "size_on_disk": 48331158857,
  "pruned": false,
  "softforks": {
    "bip34": {
      "type": "buried",
      "active": true,
      "height": 227931
    },
    "bip66": {
      "type": "buried",
      "active": true,
      "height": 363725
    },
    "bip65": {
      "type": "buried",
      "active": false,
      "height": 388381
    },
    "csv": {
      "type": "buried",
      "active": false,
      "height": 419328
    },
    "segwit": {
      "type": "buried",
      "active": false,
      "height": 481824
    }
  },
  "warnings": ""
}

bitcoin@raspberrypi:~$ bitcoin-cli getnetworkinfo
{
  "version": 200100,
  "subversion": "/Satoshi:0.20.1/",
  "protocolversion": 70015,
  "localservices": "0000000000000409",
  "localservicesnames": [
    "NETWORK",
    "WITNESS",
    "NETWORK_LIMITED"
  ],
  "localrelay": true,
  "timeoffset": -13,
  "networkactive": true,
  "connections": 4,
  "networks": [
    {
      "name": "ipv4",
      "limited": false,
      "reachable": true,
      "proxy": "",
      "proxy_randomize_credentials": false
    },
    {
      "name": "ipv6",
      "limited": false,
      "reachable": true,
      "proxy": "",
      "proxy_randomize_credentials": false
    },
    {
      "name": "onion",
      "limited": true,
      "reachable": false,
      "proxy": "",
      "proxy_randomize_credentials": false
    }
  ],
  "relayfee": 0.00001000,
  "incrementalfee": 0.00001000,
  "localaddresses": [
  ],
  "warnings": ""
}