Bitcoind synchronization monitor

bitcoind-monitor.sh

#!/bin/bash

clear
while true; do
BLOCKS=$(bitcoin-cli -datadir=/bitcoin getblockchaininfo | grep 'blocks' | cut -d' ' -f4 | cut -d',' -f1)
SYNC=$(bitcoin-cli -datadir=/bitcoin getblockchaininfo | grep 'progress' | cut -d' ' -f4 | cut -d',' -f1)
USED=$(df -h | grep bitcoin | sed -e's/  */ /g' | cut -d' ' -f3)
TOTAL=$(df -h | grep bitcoin | sed -e's/  */ /g' | cut -d' ' -f2)
  echo -ne $BLOCKS blocks
  echo -ne " | "
  echo -ne $(echo "$SYNC * 100" | bc | cut -c1-5)%
  echo -ne " | "
  echo -ne $USED used on $TOTAL \\r
  sleep 1
done

Output:
239180 blocks | 7.578% | 9.6G used on 197G

Adapt the USED and TOTAL grep command for getting the right HDD.