bash welcome script for RaspiBolt

20-raspberry-bitcoin

#!/bin/sh
# original script by Damian Mee https://github.com/meeDamian
# copy script to /etc/update-motd.d/

# set colors
color_red='\033[0;31m'
color_green='\033[0;32m'
color_yellow='\033[0;33m'
color_gray='\033[0;37m'
color_darkgray='\033[1;30m'

# get memory
load=$(w | grep load | cut -c11-)
ram_total=$(free -m | grep Mem | awk '{ print $2 }')
ram_avail=$(free -m | grep Mem | awk '{ print $7 }')
if [ ${ram_avail} -lt 100 ]; then
  color_ram="${color_red}\e[7m"
else
  color_ram=${color_green}
fi

# get storage
sd_free=$(df -h | grep "/$" | awk '{ print $4 }')
sd_free_ratio=$(printf "%d" "$(df -h | grep "/$" | awk '{ print $4/$2*100 }')") 2>null
if [ ${sd_free_ratio} -lt 10 ]; then
  color_sd="${color_red}"
else
  color_sd=${color_green}
fi

hdd_free=$(df -h | grep "/mnt/hdd$" | awk '{ print $4 }')
hdd_free_ratio=$(printf "%d" "$(df -h | grep '/mnt/hdd$' | awk '{ print $4/$2*100 }')") 2>null
if [ ${hdd_free_ratio} -lt 10 ]; then
  color_hdd="${color_red}\e[7m"
else
  color_hdd=${color_green}
fi

# get network traffic
network_rx=$(ifconfig eth0 | grep 'RX packets' | awk '{ print $6$7 }' | sed 's/[()]//g')
network_tx=$(ifconfig eth0 | grep 'TX packets' | awk '{ print $6$7 }' | sed 's/[()]//g')

# Bitcoin blockchain
btc_path=$(command -v bitcoin-cli)
if [ ! -z ${btc_path} ]; then
  btc_line1="₿itcoin"

  chain="$(bitcoin-cli -datadir=/home/bitcoin/.bitcoin getblockchaininfo | jq -r '.chain')"
  if [ ! -z $chain ]; then
    btc_line1="${btc_line1} (${chain}net)"

    # get sync status
    progress="$(bitcoin-cli -datadir=/home/bitcoin/.bitcoin getblockchaininfo | jq -r '.verificationprogress')"
    percentage=$(printf "%.1f%%" "$(echo $progress | awk '{print 100 * $1}')")
    sync_ratio=$(printf "%d" "$(echo $progress | awk '{print 100 * $1}')") 2>null
    if [ -n $percentage ]; then
      if [ ${sync_ratio} -gt 98 ]; then
        btc_line2="${color_gray}Synced  ${color_green}${sync_ratio}%"
      else
        btc_line2="${color_yellow}Syncing ${percentage}"
      fi
    fi

    # get last known block
    last_block="$(bitcoin-cli -datadir=/home/bitcoin/.bitcoin getblockcount)"
    if [ ! -z "${last_block}" ]; then
      btc_line2="${btc_line2} ${color_gray}(block ${last_block})"
    fi

    # get mem pool transactions
    mempool="$(bitcoin-cli -datadir=/home/bitcoin/.bitcoin getmempoolinfo | jq -r '.size')"

  else
    btc_line2="${color_red}NOT RUNNING\t\t"
  fi
fi

# get public IP
if [ $chain  = "test" ]
then
  public_check=$(curl -s https://bitnodes.earn.com/api/v1/nodes/me-18333/ | jq .success)
  public_port=18333
else
  public_check=$(curl -s https://bitnodes.earn.com/api/v1/nodes/me-8333/ | jq .success)
  public_port=8333
fi
public_ip=$(curl -s ipinfo.io/ip)

if [ $public_check = "true" ]; then
  public_line1="${color_green}Yes"
  public_line2="${color_gray}${public_ip}:${public_port}"
else
  public_line1="${color_red}Not reachable"
  public_line2="${color_gray}${public_ip}:${public_port}"
fi

# get lightning info
ln_alias="$(/home/bitcoin/bin/eclair-cli getinfo | jq -r '.alias')" 2>null
ln_port="$(/home/bitcoin/bin/eclair-cli getinfo | jq -r '.port')"
ln_peers_total="$(/home/bitcoin/bin/eclair-cli peers | jq '. | length')"
ln_peers_online="$(/home/bitcoin/bin/eclair-cli peers | jq '[.[] | select(.state=="CONNECTED")] | length')"
ln_channels_total="$(/home/bitcoin/bin/eclair-cli channels | jq '. | length')"
ln_channels_online="$(/home/bitcoin/bin/eclair-cli channels | jq '[.[] | select(.state=="NORMAL")] | length')"

echo "
${color_green}
   .~~.   .~~.        ${color_yellow}$(hostname): ${color_gray}Bitcoin Core + Lightning${color_green}
  '. \ ' ' / .'       ${color_yellow}-------------------------------------------------------------------------------${color_red}
   .~ .~~~..~.        ${color_gray}${load}${color_red}
  : .~.'~'.~. :
 ~ (   ) (   ) ~      ${color_yellow}Ressources free\t\t${btc_line1}\t\tLightning${color_red}
( : '~'.~.'~' : )     ${color_gray}Memory    ${color_ram}${ram_avail}M / ${ram_total}M     ${color_gray}${btc_line2}    ${color_gray}${ln_alias}${color_red}
 ~ .~ (   ) ~. ~      ${color_gray}SDD       ${color_sd}${sd_free} (${sd_free_ratio}%)      ${color_gray}Public  ${public_line1}                   ${color_gray}  ${ln_peers_online}/${ln_peers_total} Peers online${color_red}
  (  : '~' :  )       ${color_gray}HDD       ${color_hdd}${hdd_free} (${hdd_free_ratio}%)              ${color_gray}${public_line2}   ${color_gray}  ${ln_channels_online}/${ln_channels_total} Channels online${color_red}
   '~ .~~~. ~'        ${color_gray}Bandwidth ▲ ${network_tx}        ${color_gray}Mempool ${mempool} tx${color_red}
       '~'            ${color_gray}          ▼ ${network_rx}${color_red}

$(tput -T xterm sgr0)"