This is a MOTD for a raspberry pi running bitcoind and either lnd or lightning (or both). To install, download and execute `install.sh` file.

10-uname

#!/bin/sh

. /usr/local/lib/metrics/colors.sh
. /usr/local/lib/metrics/board.sh

echo
echo -n "${WHITE}Raspberry Pi ($(get_host), $(get_public_ip), $(get_local_ip))${RESET_STYLE} " && uname -rm
uptime

20-raspberry-bitcoin

#!/bin/sh

. /usr/local/lib/metrics/colors.sh
. /usr/local/lib/metrics/board.sh
. /usr/local/lib/metrics/bitcoind.sh

ram_total="$(get_memory | grep ram | grep total | cut -f 4)"
ram_used="$(get_memory | grep ram | grep used | cut -f 4)"

if is_swap_enabled; [ "$?" -eq "0" ]; then
  swap_total="$(get_memory | grep swap | grep total | cut -f 4)"
  swap_used="$(get_memory | grep swap | grep used | cut -f 4)"

  swap_info="swap: ${BOLD}${swap_used} / ${swap_total}${RESET_STYLE}"
fi

sd_total="$(get_storage | grep sd | grep total | cut -f 4)"
sd_used="$(get_storage | grep sd | grep used | cut -f 4)"

if is_external_storage_available; [ "$?" -eq "0" ]; then
  ext_total=$(get_storage | grep ext | grep total | cut -f 4)
  ext_used=$(get_storage | grep ext | grep used | cut -f 4)

  ext_info="external: ${BOLD}${ext_used} / ${ext_total}${RESET_STYLE}"
fi

if [ ! -z "$(get_bitcoind_binary_path)" ]; then
  btc_line1="₿itcoin Core"

  if is_bitcoind_available; [ "$?" -ne "0" ]; then
    btc_line2="${RED}NOT RUNNING"

  else
    version="$(get_bitcoind_version)"
    if [ -z "${version}" ]; then
      btc_line2="${YELLOW}STARTING OR IDLE…"

    else
      btc_line1="${btc_line1} ${BOLD}(v${version}, $(get_bitcoind_chain))${RESET_STYLE}"
      btc_line2="peers connected: ${BOLD}$(get_bitcoind_peer_count)${RESET_STYLE}\t${SOME_COLOR}last block: ${BOLD}$(get_bitcoind_blocks) ($(get_bitcoind_progress))${RESET_STYLE}"
      btc_line3="balance: ${BOLD}$(get_bitcoind_balance btc)${RESET_STYLE}\t${SOME_COLOR}mempool transactions: ${BOLD}$(get_bitcoind_mempool_count)${RESET_STYLE}"

      addresses="$(get_bitcoind_addresses | tr "\n" "\t")"
      if [ ! -z "${addresses}" ]; then
        btc_line4="accessible as"
        btc_line5="${addresses}"
      fi
    fi
  fi
fi

echo "${GREEN}
   .~~.   .~~.      resources used
  '. \ ' ' / .'       mem: ${BOLD}${ram_used} / ${ram_total}${RESET_STYLE}${GREEN}\t\t${swap_info}${RED}
   .~ .~~~..~.        ${GREEN}storage: ${BOLD}${sd_used} / ${sd_total}${RESET_STYLE}${GREEN}\t${ext_info}${RED}
  : .~.'~'.~. :
 ~ (   ) (   ) ~    ${SOME_COLOR}${btc_line1}${RED}
( : '~'.~.'~' : )     ${SOME_COLOR}${btc_line2}${RED}
 ~ .~ (   ) ~. ~      ${SOME_COLOR}${btc_line3}${RED}
  (  : '~' :  )
   '~ .~~~. ~'      ${SOME_COLOR}${btc_line4}${RED}
       '~'            ${SOME_COLOR}${BOLD}${btc_line5}${RESET_STYLE}${RED}
${RESET_STYLE}"

23-raspberry-lnd

#!/bin/sh

. /usr/local/lib/metrics/colors.sh
. /usr/local/lib/metrics/lnd.sh

if [ -z "$(get_lnd_binary_path)" ]; then
  exit 0
fi

if is_lnd_available; [ "$?" -ne "0" ]; then
  ln_line2="${RED}NOT RUNNING"

else
  version="$(get_lnd_version)"
  if [ -z "${version}" ]; then
      ln_line2="${YELLOW}STARTING OR IDLE…"

  else
    ln_line1="${BLUE}${BOLD}($(get_lnd_chain), $(get_lnd_alias), ${version})${RESET_STYLE}"
    ln_line2="id: ${BOLD}$(get_lnd_pubkey)${RESET_STYLE}"
    ln_line3="peers connected: ${BOLD}$(get_lnd_peer_count)${RESET_STYLE}\t${BLUE}synced to block: ${BOLD}$(get_lnd_blocks)${RESET_STYLE}"
    ln_line4="relayed HTLCs #: ${BOLD}$(get_lnd_relayed_txs_count)${RESET_STYLE}${BLUE}\tearned: ${BOLD}$(get_lnd_relayed_txs_earned)${RESET_STYLE}"
    ln_line5="channels: ${BOLD}$(get_lnd_channels_count_all)${RESET_STYLE} (${YELLOW}${BOLD}pending: $(get_lnd_channels_count_pending)${RESET_STYLE}${BLUE}, ${GREEN}${BOLD}open: $(get_lnd_channels_count_open)${RESET_STYLE}${BLUE}, ${RED}${BOLD}closing: $(get_lnd_channels_count_closing)${RESET_STYLE}${BLUE})"
    ln_line6="balance:"

    s_max="$(get_lnd_funds_chan_spend_max)"
    if [ "${s_max}" -gt "0" ]; then
      max_spend=" (max: $(sat_to_btc "${s_max}"))"
    fi
    ln_line7="on-chain: ${BOLD}$(get_lnd_funds_onchain btc)${RESET_STYLE}\t${BLUE}LN spend  : ${BOLD}$(get_lnd_funds_chan_spend_total btc)${max_spend}${RESET_STYLE}"

    r_max="$(get_lnd_funds_chan_receive_max)"
    if [ "${r_max}" -gt "0" ]; then
      max_receive=" (max: $(sat_to_btc "${r_max}"))"
    fi
    ln_line8="\t\t\t\tLN receive: ${BOLD}$(get_lnd_funds_chan_receive_total btc)${max_receive}${RESET_STYLE}"
    ln_line9="accessible as"
    ln_line10="${BOLD}$(get_lnd_addresses | tr "\n" "\t")${RESET_STYLE}"

    ln_line12="connstring:"

    ln_line14="${BOLD}$(get_lnd_pubkey)@$(get_lnd_addresses | head -n 1)"
  fi
fi

echo "${YELLOW}         ____       ${BLUE}lnd ${YELLOW}⚡ ${ln_line1}${YELLOW}
        /   /         ${BLUE}${ln_line2}${YELLOW}
       /   /          ${BLUE}${ln_line3}${YELLOW}
      /   /_          ${BLUE}${ln_line4}${YELLOW}
     /_    /          ${BLUE}${ln_line5}${YELLOW}
      /   /           ${BLUE}${ln_line6}${YELLOW}
      /  /_             ${BLUE}${ln_line7}${YELLOW}
      /   /           ${BLUE}${ln_line8}${YELLOW}
      /  /          ${BLUE}${ln_line9}${YELLOW}
      / /             ${BLUE}${ln_line10}${YELLOW}
      //              ${BLUE}${ln_line11}${YELLOW}
      /             ${BLUE}${ln_line12}${YELLOW}

${ln_line14}
${RESET_STYLE}"

26-raspberry-lightning

#!/bin/sh

. /usr/local/lib/metrics/colors.sh
. /usr/local/lib/metrics/lightningd.sh

if [ -z "$(get_lightningd_binary_path)" ]; then
  exit 0
fi

if is_lightningd_available; [ "$?" -ne "0" ]; then
  ln_line2="${RED}NOT RUNNING"

else
  version="$(get_lightningd_version)"
  if [ -z "${version}" ]; then
      ln_line2="${YELLOW}STARTING OR IDLE…"

  else
    ln_line1="${BLUE}${BOLD}($(get_lightningd_chain), $(get_lightningd_alias), ${version})${RESET_STYLE}"
    ln_line2="id: ${BOLD}$(get_lightningd_pubkey)${RESET_STYLE}"
    ln_line3="peers connected: ${BOLD}$(get_lightningd_peer_count)${RESET_STYLE}\t${BLUE}synced to block: ${BOLD}$(get_lightningd_blocks)${RESET_STYLE}"
    # ln_line4="relayed HTLCs #: ${BOLD}${relay_txs}${RESET_STYLE}${BLUE}\tearned: ${BOLD}${relay_earnings}${RESET_STYLE}"

    ch_other="$(get_lightningd_channels_count_other)"
    if [ "${ch_other}" -ne "0" ]; then
      other_channels="${BLUE}, other: ${ch_other}${RESET_STYLE}"
    fi
    ln_line5="channels: ${BOLD}$(get_lightningd_channels_count_all)${RESET_STYLE} (${YELLOW}${BOLD}pending: $(get_lightningd_channels_count_pending)${RESET_STYLE}${BLUE}, ${GREEN}${BOLD}open: $(get_lightningd_channels_count_open)${RESET_STYLE}${BLUE}, ${RED}${BOLD}closing: $(get_lightningd_channels_count_closing)${RESET_STYLE}${other_channels}${BLUE})"
    ln_line6="balance:"

    s_max="$(get_lightningd_funds_chan_spend_max)"
    if [ "${s_max}" -gt "0" ]; then
      max_spend=" (max: $(sat_to_btc "${s_max}"))"
    fi
    ln_line7="on-chain: ${BOLD}$(get_lightningd_funds_onchain btc)${RESET_STYLE}\t${BLUE}LN spend  : ${BOLD}$(get_lightningd_funds_chan_spend_total btc)${max_spend}${RESET_STYLE}"

    r_max="$(get_lightningd_funds_chan_receive_max)"
    if [ "${r_max}" -gt "0" ]; then
      max_receive=" (max: $(sat_to_btc "${r_max}"))"
    fi
    ln_line8="\t\t\t\tLN receive: ${BOLD}$(get_lightningd_funds_chan_receive_total btc)${max_receive}${RESET_STYLE}"
    ln_line9="accessible as"

    ipv4=$(get_lightningd_address ipv4)
    ipv6=$(get_lightningd_address ipv6)
    torv2=$(get_lightningd_address torv2)
    torv3=$(get_lightningd_address torv3)

    # I'm sorry for the `if` hell below 😬
    if [ ! -z ${ipv6} ]; then
      ln_line9="${ln_line9} ipv6: ${BOLD}${ipv6}${RESET_STYLE}"
    fi

    if [ ! -z ${torv3} ]; then
      ln_line10="torv3: ${BOLD}${torv3}${RESET_STYLE}"
    fi

    if [ ! -z ${torv2} ]; then
      legacy_line="torv2: ${BOLD}${torv2}${RESET_STYLE}"
    fi

    if [ ! -z "${legacy_line}" ]; then
      legacy_line="${legacy_line}\t"
    fi

    if [ ! -z ${ipv4} ]; then
      legacy_line="${legacy_line}${BLUE}ipv4: ${BOLD}${ipv4}${RESET_STYLE}"
    fi

    if [ ! -z "${ln_line10}" ]; then
      ln_line11="${legacy_line}"
    else
      ln_line10="${legacy_line}"
    fi

    ln_line12="connstring:"

    ln_line14="${BOLD}$(get_lightningd_pubkey)@$(get_lightningd_address ipv4)"
  fi
fi

echo "${YELLOW}         ____       ${BLUE}c-lightning ${YELLOW}⚡ ${ln_line1}${YELLOW}
        /   /         ${BLUE}${ln_line2}${YELLOW}
       /   /          ${BLUE}${ln_line3}${YELLOW}
      /   /_          ${BLUE}${ln_line4}${YELLOW}
     /_    /          ${BLUE}${ln_line5}${YELLOW}
      /   /           ${BLUE}${ln_line6}${YELLOW}
      /  /_             ${BLUE}${ln_line7}${YELLOW}
      /   /           ${BLUE}${ln_line8}${YELLOW}
      /  /          ${BLUE}${ln_line9}${YELLOW}
      / /             ${BLUE}${ln_line10}${YELLOW}
      //              ${BLUE}${ln_line11}${YELLOW}
      /             ${BLUE}${ln_line12}${YELLOW}

${ln_line14}
${RESET_STYLE}"

30-swap-warning

#!/bin/sh

. /usr/local/lib/metrics/colors.sh
. /usr/local/lib/metrics/board.sh

if is_swap_enabled; [ "$?" -ne "0" ]; then
  exit 0
fi

echo "${RED}$(get_memory | grep swap | grep used | cut -f 4) of SWAP is being used! It can significanly shorten the life span of your microSD card.

  Disable SWAP with:${RESET_STYLE}
    sudo swapoff --all && sudo apt-get remove dphys-swapfile && sudo apt-get autoremove
  ${RED}
  Or disable this warning with:${RESET_STYLE}
    sudo chmod -x /etc/update-motd.d/30-swap-warning"

install.sh

#!/bin/sh

if [ "$(id -u)" -ne "0" ]; then
  echo "Installing motd requires root"
  exit 1
fi

command -v jq 2>&1 1>/dev/null
if [ "$?" -ne "0" ]; then
  echo "'jq' is needed by functions within this script. If you're on Debian-based system, you can install it with:"
  echo "\tsudo apt install jq"
  exit 1
fi

DEST=/etc/update-motd.d

warning_path="${DEST}/30-swap-warning"
if [ ! -f "${warning_path}" ] || [ -x "${warning_path}" ]; then
  warning_path=""
fi

# install "metrics" dependencies from https://gist.github.com/meeDamian/fec388a943e0d4e64c876e6196a8d18f
wget -qO- 'https://gist.githubusercontent.com/meeDamian/fec388a943e0d4e64c876e6196a8d18f/raw/12e8741e133146ce4bfd98548462916b068ea554/install.sh' | grep -v 'print.sh' | sh

mkdir -p "${DEST}"

wget -qN 'https://gist.githubusercontent.com/meeDamian/21a215f42ad928782188892c82fa5015/raw/040f60ae160e54c8162bec117ab0f036250c3284/10-uname' -P "${DEST}"
wget -qN 'https://gist.githubusercontent.com/meeDamian/21a215f42ad928782188892c82fa5015/raw/829e8993c0d7f6cf8b78300b913d033a8d5da738/20-raspberry-bitcoin' -P "${DEST}"
wget -qN 'https://gist.githubusercontent.com/meeDamian/21a215f42ad928782188892c82fa5015/raw/73c78d5f3eaf4ce96119d50b8f9b96b0f30f325c/23-raspberry-lnd' -P "${DEST}"
wget -qN 'https://gist.githubusercontent.com/meeDamian/21a215f42ad928782188892c82fa5015/raw/f3d534e484ea41b81bcd237254c88a3513d7973d/26-raspberry-lightning' -P "${DEST}"
wget -qN 'https://gist.githubusercontent.com/meeDamian/21a215f42ad928782188892c82fa5015/raw/e108d3088ad8cf1d9aea733687b45243bcbb0d4d/30-swap-warning' -P "${DEST}"

chmod -R +x "${DEST}/"

if [ ! -z "${warning_path}" ]; then
  chmod -x "${warning_path}"
fi

echo "" > /etc/motd

run-parts --lsbsysinit /etc/update-motd.d